Lab_8_Circ Motion - PHYS 181 FA23 001-2 004-10 013-15 017
.pdf
keyboard_arrow_up
School
University Of Arizona *
*We aren’t endorsed by this school
Course
181L
Subject
Physics
Date
Dec 6, 2023
Type
Pages
9
Uploaded by UltraFreedom12422
Circular
Motion
When
an
object
is
accelerating
its
velocity
must
be
changing.
However,
this
does
not
mean
that
its
speed
is
changing.
If
we
consider
an
object
travelling
around
in
a
circle
at
uniform
speed,
then
it
must
always
be
accelerating
even
though
its
speed
is
constant.
This
is
because
the
direction
of
its
velocity
is
constantly
changing.
Newton’s
second
law
relates
the
force
on
an
object
to
its
acceleration.
So,
this
means
that
there
must
be
a
net
force
that
causes
an
object
to
go
in
a
circle.
If
there
is
no
net
force,
the
object
will
travel
in
a
straight
path.
Consider
the
case
of
a
ball
at
the
end
of
a
string
that
is
being
twirled
in
a
horizontal
circle
on
a
table
at
uniform
speed.
In
order
for
the
ball
to
travel
in
a
circle,
there
must
be
a
constant
acceleration
pointing
towards
the
center
of
the
circle.
This
is
known
as
the
centripetal
acceleration
and
it
always
points
radially
inward.
Newton’s
second
law
states
that
the net
force
must
be
equal
to
the
mass
of
the
object
times
its
acceleration.
So,
in
this
case
mv?
Foet
=ma,
=
-
1)
where
a,
is
the
centripetal
acceleration,
v
is
the
speed
of
the
ball
and
r
is
the
radius
of
the circle.
We
see
that
the
faster
the
ball
is
moving
the
larger
the
centripetal
acceleration.
Similarly,
the
smaller
the
circle
the
larger
the
acceleration
must
be
because
the
direction
must
be
changing
more
quickly.
In
the
case
of
the
ball,
the net
force
is
provided
by
the
tension
in
the
rope.
If
the
rope
was
suddenly
cut,
the
ball
would
fly
off
in
an
initially
straight
path.
In
the
first
part
of
the
lab,
you
will
be
measuring
the
force
required
to
keep
different
masses
rotating
at
constant
speeds.
In
the
second
part
of
the
lab,
you
will
be
examining
the
motion
of
a
roller
coaster
when
it
is
upside
down.
In
this
case,
the
roller
coaster
must
be
moving
fast
enough
that
the
centripetal
acceleration
is
larger
than
the
acceleration
due
to
gravity.
You
will
find
the
minimum
height
that
the
roller
coaster
must
start
from
in
order
to
complete
a
loop
without
falling
off
the
track.
Goals
of
this
lab:
o
Understand
the
concept
of
centripetal
acceleration.
e
Measure
the
force
required
for
uniform
circular
motion.
e
Determine
the
minimum
height
for
a
roller
coaster
to
complete
a
loop.
78
Circular
Motion
Lab
equipment:
Rotating
arm
—
The
rotating
arm
is
spun
by
hand.
There
is
a
rotary
:;__-’_'H’—-—"
5
motion
sensor
on
the
bottom
and
two
masses
on
it.
Force
sensor
This
force
sensor
can
measure
forces
up
to
50
N.
It
will
be
used
to
measure
the
force on
the
rotating
mass.
Rotary
motion
sensor
This
rotary
motion
sensor
measures
the
angular
velocity
of
the
rotating
arm.
Roller
Coaster
The
car
will
travel
along
the
roller
coaster
track.
Car
This
car
can
travel
on
the
roller
coaster
path.
The
flag
is
4.7
mm
wide
and
10
mm
between
the
two
arms.
Photogates
The
photogates
have
an
infrared
sensor
in
them
that
will
be
used
to
measure
the
velocity
of
the
car
with
the
Sparklink
interface.
Sparklink
The
Sparklink
interface
connects
to
a
computer
by
USB
and
uses
the
Capstone
software
to
acquire
data
from
up
to
4
sensors
at
once.
79
Circular
Motion
Lab
Procedures
1.
Force
versus
rotation
speed
As
an
object
is
spun
faster
in
a
circle,
its
acceleration
must
increase.
In
order
to
increase
the
acceleration,
the
force
acting
on
the
object
must
increase.
The
picture
below shows
the
setup
for
this
part
of
the
lab.
There
is
a
force
sensor
attached
by
a
string
to
a
mass
sitting
on
a
rotating
arm.
As
the
arm
rotates,
the
string
will
ensure
that
the
mass
moves
in
a
circle
of
constant
radius.
You
are
going
to
Rotary
Motion
O
be
measuring
the
tension
in
the
string
as
a
function
of
the
rotation
speed.
There
are
a
total
of
three
forces
acting
on
the
mass;
gravity,
the
normal
force
and
the
tension
from
the
string.
The
first
two
are
both
in
the
vertical
direction
and
will
cancel each
other.
This
leaves
only
the
tension
which
always
points
along
the
string,
towards
the
center
of
the circle.
Newton’s
second
law
gives,
mv?
@)
Free
=T
=
ma,
=
where
T
is
the
tension
in
the
string,
m
is
the
mass,
v
is
the
magnitude
of
the
linear
velocity
and
r
is
the
radius.
You
can
measure
the
mass
of
the
object
and
its
radius.
The
force
sensor
measures
the
tension.
This
leaves
only
the
magnitude
of
the
linear
velocity
to
measure.
The
rotating
arm
is
connected
to
a
rotary
motion
sensor
which
can
measure
the
angular
velocity
of
the
arm.
The
angular
velocity,
w
of an
object
is
related
to
its
linear
velocity
by
w=—
3)
r
Putting
equation
(3)
into
the
expression
for
the
tension
(equation
(2))
gives
T
=
mrw?
4)
80
Circular
Motion
Set
up
the
rotating
arm
as
shown
in
the
picture
above.
Load
the
lab
in
the
PASCO
Capstone
software
and
switch
to
the tab
to
measure
the
force
versus
rotational
velocity.
For
instructions
on
setting
up
the
Capstone
software,
refer
to
the
appendix
of
the
lab
manual.
e
Pick
a
mass
of
around
200
grams
and
choose
a
position
near
the
middle
of
the
arm.
You
can
adjust
the
position
of
the
mass
by
moving
the
stand
with
the
force
sensor
up
or
down.
"
Measure
the
mass
of
the
object
and
its
distance
from
the
center.
Don’t
forget
to
measure
the
mass
of
the
black
slider
and
the
additional
mass.
Record
these
values
into
the
table
on
the
worksheet.
®
Make
sure
that
the
rotating
arm
is
well
balanced
by
moving
the
counter
weight
on
the
other
side.
When
it
is
properly
balanced,
the
arm
should
not turn by
itself
when
tilted.
Press
the
zero
button
on
the
force
sensor.
Start
turning
the
arm
until
it
is
rotating
at
its
maximum
speed
which
should
be
around
w
=
10
rad/s.
"
Record
data
while
the
arm
slows
to
a
stop.
"
Use
the
coordinates
tool
to
measure
the
force
and
angular
velocity.
Make
sure
that
you
are
displaying
at
least
4
digits
for
each.
You
should
record
the
force
and
angular
velocity
at
equal
intervals
of
angular
velocity
in
the
table
on
the
worksheet.
You
should
have
at
least
10
different
values
of
the
angular
velocity.
II.
Force
versus
mass
In
this
part
of
the
lab,
you
will
be
varying
the
mass
and
recording
the
tension
for
a
fixed
radius.
You
will
need
to
take
all
of
the
measurements
at
the
same
angular
velocity
because
as
you
saw
in
the
first
section,
the
angular
velocity
also
changes
the
force.
The
setup
is
exactly
the
same
as
the
previous
part.
e
Pick
a
convenient
angular
velocity
to
use
for the
measurement
and
choose
a
position
near
the
middle
of
the
arm
for
the
mass.
®
Measure
the
distance
from
the
center.
Record
this
value and
the
angular
velocity
that
you
will
use
into
the
table
on
the
worksheet.
*
You
are
going
to
use
five
different
masses
in
this
part
of
the
lab.
When
you
put
each
mass
on,
you
need
to
make
sure
that
the
rotating
arm
is
well
balanced
by
moving
the
counter
weight
on
the
other
side.
When
it
is
properly
balanced,
the
arm
should
not turn by
itself
when
tilted.
Press
the
zero
button
on
the
force
sensor.
Start
turning
the
arm
until
it
is
rotating
faster
than
the
angular
velocity
that
you
are
using
for
your
measurements.
"
Record
data
while
the
arm
slows
to
a
stop.
"
After
the
arm
has
stopped
rotating,
use
the
coordinates
tool
to
measure
the
force
and
angular
velocity.
Make
sure
that
you
are
displaying
at
least
4
digits
for
each.
You
should
find
the
entry
with
the
angular
velocity
that
you
are
using.
Then
record
the
force
at
this
angular
velocity
in
the
table
on
the
worksheet.
Repeat
this
measurement
with
the
other
masses
until
you
have
measured
5
different
masses.
81
Your preview ends here
Eager to read complete document? Join bartleby learn and gain access to the full version
- Access to all documents
- Unlimited textbook solutions
- 24/7 expert homework help
Related Questions
A car is driving along a circular track of diameter d = 0.75 km at a constant speed of v = 22 m/s.a. Write an expression for the magnitude of acceleration a of the car in terms of the given parameter.
b. What is the magnitude, in meters per second squared, of the acceleration a of the car.
c. Write an expression for the minimum coefficient of the friction μ between the car's tires and the road that is required in order to keep the car going in a circle in terms of the given parameters.
arrow_forward
A 615 kg car completes one lap in a time of 14.3 sec around a circular track with a radius of 50.0 m. What is the acceleration of the car? What force must the track exert on the car to produce this acceleration?
arrow_forward
When visiting a friend in Atlanta you decide to drive around the city. You turn a corner and are driving up a steep hill. Suddenly, a small boy runs out on the street chasing a ball. You slam on the brakes and skid to a stop leaving a 50-foot-long skid mark on the street. The boy calmly walks away but a policemen watching from the sidewalk walks over and gives you a speeding ticket. He points out that the speed limit on this street is 25 mph. After you recover your wits, you begin to examine the situation. You determine that the street makes an angle of 25◦ with the horizontal and that the coefficient of static friction between your tires and the street is 0.80. You also find that the coefficient of kinetic friction between your tires and the street is 0.60. Your car’s information book tells you that the mass of your car is 1600 kg. You weigh 140 lbs. Will you fight the ticket in court? Please be as detailed as possible with your answer.
arrow_forward
When visiting a friend in Atlanta you decide to drive around the city. You turn a corner and are driving up a steep hill. Suddenly, a small boy runs out on the street chasing a ball. You slam on the brakes and skid to a stop leaving a 50-foot-long skid mark on the street. The boy calmly walks away but a policemen watching from the sidewalk walks over and gives you a speeding ticket. He points out that the speed limit on this street is 25mph. After you recover your wits, you begin to examine the situation. You determine that the street makes an angle of 25◦ with the horizontal and that the coefficient of static friction between your tires and the street is 0.80. You also find that the coefficient of kinetic friction between your tires and the street is 0.60. Your car’s information book tells you that the mass of your car is 1600 kg. You weigh 140 lbs. Draw a figure for this question. Will you fight the ticket in court?
arrow_forward
When visiting a friend in Atlanta you decide to drive around the city. You turn a corner and are driving up a steep hill. Suddenly, a small boy runs out on the street chasing a ball. You slam on the brakes and skid to a stop leaving a 50-foot-long skid mark on the street. The boy calmly walks away but a policemen watching from the sidewalk walks over and gives you a speeding ticket. He points out that the speed limit on this street is 25 mph. After you recover your wits, you begin to examine the situation. You determine that the street makes an angle of 25◦ with the horizontal and that the coefficient of static friction between your tires and the street is 0.80. You also find that the coefficient of kinetic friction between your tires and the street is 0.60. Your car’s information book tells you that the mass of your car is 1600 kg. You weigh 140 lbs. Will you fight the ticket in court?
arrow_forward
When visiting a friend in Atlanta you decide to drive around the city. You turn a corner and are driving up a steep hill. Suddenly, a small boy runs out on the street chasing a ball. You slam on the brakes and skid to a stop leaving a 50-foot-long skid mark on the street. The boy calmly walks away but a policemen watching from the sidewalk walks over and gives you a speeding ticket. He points out that the speed limit on this street is 25mph. After you recover your wits, you begin to examine the situation. You determine that the street makes an angle of 25◦ with the horizontal and that the coefficient of static friction between your tires and the street is 0.80. You also find that the coefficient of kinetic friction between your tires and the street is 0.60. Your car’s information book tells you that the mass of your car is 1600 kg. You weigh 140 lbs. Will you fight the ticket in court? Please draw a figure with your detailed answer.
arrow_forward
During their physics field trip to the amusement park, Tyler and Maria took a rider on the Whirligig. The Whirligig ride consists of long swings which spin in a circle at relatively high speeds. As part of their lab, Tyler and Maria estimate that the riders travel through a circle with a radius of 6.5 m and make one turn every 5.8 seconds. Determine the speed of the riders on the Whirligig.
arrow_forward
You throw a ball to the sky to check the dynamics of its speed. When the ball is going up, its speed is decreasing as the gravitational force is working downwards. However, after some time, the ball will reach the pick position and will start coming back to the ground. At this moment, the speed of the ball will be increasing with time. What would happen to its acceleration?
arrow_forward
5. A particle travels in a circle of radius 12 m at a constant speed of 21 m/s. What is
the magnitude of the acceleration?
6. The velocity of a particle in reference frame A is (4.0 î+ 5.0ĵ) m/s. The velocity of
reference frame A with respect to reference frame B is 6.0 k m/s, and the velocity
of reference frame B with respect to C is 2.0 j m/s. What is the velocity of the
particle in reference frame C?
arrow_forward
An object has an acceleration that is directed opposite of its motion. What is true of the object?
O It is moving in a circle.
O It is slowing down.
O It is moving at a constant speed.
O It is speeding up.
O It is moving vertically.
6 7
4.
arrow_forward
A 615 kg racing car completes one lap in 14.3 seconds around a circular track with a radius of 50.0 meters. The car moves with a constant speed. What is the acceleration of the car and what is the force must the track exert on the tires to produce this acceleration?
arrow_forward
A planet has a mass equals to the mass of Earth and a radius 1.2 times the radius of Earth. What is the magnitude of the acceleration of a body falling near the surface of this plant in m/s2 ? Give your answer to three significant figures.
arrow_forward
In a laboratory test of tolerance for high acceleration, a pilot is swung in a circle 15.0 m in diameter. It is found that the pilot
blacks out when he is spun at 30.6 rpm (rev/min).
At what acceleration (in SI units) does the pilot black out?
acceleration: 77.01
m/s?
Express this acceleration in terms of a multiple of g.
acceleration as a multiple of g:
7.858
If you want to decrease the acceleration by 22.0% without changing the diameter of the circle, by what percent must you
change the time for the pilot to make one circle?
percent of time change:
arrow_forward
The car starts from rest and accelerates according to
the relationship
0.001V2 + a - 3 = 0
It travels around a circular track that has a radius of 300
meters. Calculate the velocity of the car after it has travelled
halfway around the track. What is the car's maximum
possible speed?
arrow_forward
During their field trip to the amusement park, Eli and Frank took a rider on the Whirligig. The Whirligig ride consists of long swings which spin in a circle at relatively high speeds. They estimate that the riders travel through a circle with a radius of 6.5 m and make one turn every 5.8 seconds. Determine the speed of the riders on the Whirligig.
arrow_forward
What would this one be?
arrow_forward
Q1: It is believed that much of the mass of the universe is carried by what is called dark matter, matter that does not emit enough visible light or other radiation to be detected by conventional telescopes. However, dark matter does exert a gravitational force on other objects in the universe. Explain how dark matter might be detected and studied through the observation of "normal" matter (such as conventional stars).
Q2: Give an example of motion in which (a) the magnitude of the instantaneous velocity is always larger than the average velocity and (b) the instantaneous velocity is never parallel to the instantaneous acceleration. Describe your example detailing how these conditions are being met.
arrow_forward
a child sits on the edge of a spinning merry go round that has a radius of 1.3m. The child's speed is 5.6 m/s. What is the magnitude and direction of the child's acceleration?
arrow_forward
A person travels along a
straight road as described by the v-t
graph on the right. The person starts
at x = -3 m. On the graph paper, sketch
the following and place numbers on
2.
12
v (m/s)
the axes.
1(s)
If you don't have graph paper, you
need to carefully draw axes with a
straight edge and carefully place
numbers at the correct positions on both axes. Using a ruler to number the axes is recommended. If the
line is straight, use a straight edge to draw it. If a line is curved, make sure the curvature is clear.
a. Sketch the graph of acceleration vs. time. Show calculations.
b. Beneath the a-t graph, sketch the graph of position vs time. The horizontal axes of the two graphs
need to be aligned. Show calculations.
arrow_forward
A person swings a rock around on a string, causing it to sweep out in a circle of radius 1.8 m. If the rock travels at a constant speed of 18.7 m/s, what acceleration does it experience?
arrow_forward
From Newton's Second Law, F= ma. Derive an equation as acceleration
v2
defined as ac =
From the given equation of centripetal acceleration ac =. What will be
the change in centripetal acceleration if the velocity changes to one-half of
its original without changing the radius?
arrow_forward
When you put water in a kitchen blender, it begins to travel in a 5 cm radius circle at a speed of 1 m/s. How quickly is the water accelerating?
arrow_forward
An airplane flies in a vertical, semicircular arc in order to simulate “weightlessness” for its occupants. If the radius of the semicircular path it flies is 3500 m, what is the speed at which the plane flies?
Multiple Choice
357 m/s
580 m/s
185 m/s
1180 m/s
arrow_forward
The “Screaming Swing” is a carnival ride that is -not surprisingly- a giant swing. It’s actually two swings moving in opposite directions. At the bottom of its arc, a rider in one swing is moving at 30 m/s with respect to the ground in a 50-m diameter circle. The rider in the other swing is moving in a similar circle at the same speed, but in the exact opposite direction.
a) What is the acceleration in m/s2 that both riders experience?
b) At the bottom of the ride, as they pass each other, how fast do the riders move with respect to each other? Please answer in m/s.
arrow_forward
Elon Musk’s SpaceX is proposing that commercial flights will be ready to go to the Moon in less than three years. Yusaku Maezawa, a Japanese billionaire, is seeking eight artists to join his trip to the Moon. He wants them to inspire everyone by creating artwork after they return to Earth. The acceleration due to gravity on the surface of the Moon is 16.6% of the acceleration due to gravity on Earth. To keep the artists comfortable, it is decided that as they lift off from the Moon, the acceleration they experience close to the surface of the Moon should be kept to the equivalent of 2.83 g (1?is the acceleration due to gravity on the surface of the Earth).
What is the maximum thrust that one of the new rockets from Part 2 can withstand under this condition? Note: The weight of the artists is negligible compared to the weight of the rocket (given in part 2), so you can ignore it in your calculations!
arrow_forward
A small object of mass 0.500 kg is attached by a 0.830 m-long cord to a pin set into the surface of a frictionless table top. The object moves in a circle on the horizontal surface with a speed of 7.54 m/s.
a.)What is the magnitude of the radial acceleration of the object?
b.)What is the tension in the cord?
arrow_forward
a. Calculate the acceleration (in m/s2) of a skier heading down a 11.1° slope, assuming the coefficient of friction for waxed wood on wet snow.
b. Find the angle (in degrees) of the slope down which this skier could coast at a constant velocity.
(You can neglect air resistance, and you will find the equation for the acceleration of any object down an incline where fk = μkN, a = g(sin(θ) − μk cos(θ)), to be useful.)
arrow_forward
At t = 0, an automobile travelling north begins to make a turn. It follows one-quarter of the arc of a circle of radius 10.5 m until, at t = 2.20 s, it is travelling east. The car does not alter its speed during the turn. a) What is the speed of the car? b) What is the magnitude of the change in the car's velocity during the turn?c) Find the magnitude of the average acceleration of the car during the turn? d) What is the direction of the average acceleration of the car during the turn?
arrow_forward
A girl on a bicycle takes 15.8 s to ride half way around a circular track of radius 20.0 m (see the figure below).
R
At
t = 0
HINT
(a) What is the girl's average speed (in m/s)?
m/s
(b) What is the magnitude of her average velocity (in m/s)?
m/s
arrow_forward
SEE MORE QUESTIONS
Recommended textbooks for you
Principles of Physics: A Calculus-Based Text
Physics
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Related Questions
- A car is driving along a circular track of diameter d = 0.75 km at a constant speed of v = 22 m/s.a. Write an expression for the magnitude of acceleration a of the car in terms of the given parameter. b. What is the magnitude, in meters per second squared, of the acceleration a of the car. c. Write an expression for the minimum coefficient of the friction μ between the car's tires and the road that is required in order to keep the car going in a circle in terms of the given parameters.arrow_forwardA 615 kg car completes one lap in a time of 14.3 sec around a circular track with a radius of 50.0 m. What is the acceleration of the car? What force must the track exert on the car to produce this acceleration?arrow_forwardWhen visiting a friend in Atlanta you decide to drive around the city. You turn a corner and are driving up a steep hill. Suddenly, a small boy runs out on the street chasing a ball. You slam on the brakes and skid to a stop leaving a 50-foot-long skid mark on the street. The boy calmly walks away but a policemen watching from the sidewalk walks over and gives you a speeding ticket. He points out that the speed limit on this street is 25 mph. After you recover your wits, you begin to examine the situation. You determine that the street makes an angle of 25◦ with the horizontal and that the coefficient of static friction between your tires and the street is 0.80. You also find that the coefficient of kinetic friction between your tires and the street is 0.60. Your car’s information book tells you that the mass of your car is 1600 kg. You weigh 140 lbs. Will you fight the ticket in court? Please be as detailed as possible with your answer.arrow_forward
- When visiting a friend in Atlanta you decide to drive around the city. You turn a corner and are driving up a steep hill. Suddenly, a small boy runs out on the street chasing a ball. You slam on the brakes and skid to a stop leaving a 50-foot-long skid mark on the street. The boy calmly walks away but a policemen watching from the sidewalk walks over and gives you a speeding ticket. He points out that the speed limit on this street is 25mph. After you recover your wits, you begin to examine the situation. You determine that the street makes an angle of 25◦ with the horizontal and that the coefficient of static friction between your tires and the street is 0.80. You also find that the coefficient of kinetic friction between your tires and the street is 0.60. Your car’s information book tells you that the mass of your car is 1600 kg. You weigh 140 lbs. Draw a figure for this question. Will you fight the ticket in court?arrow_forwardWhen visiting a friend in Atlanta you decide to drive around the city. You turn a corner and are driving up a steep hill. Suddenly, a small boy runs out on the street chasing a ball. You slam on the brakes and skid to a stop leaving a 50-foot-long skid mark on the street. The boy calmly walks away but a policemen watching from the sidewalk walks over and gives you a speeding ticket. He points out that the speed limit on this street is 25 mph. After you recover your wits, you begin to examine the situation. You determine that the street makes an angle of 25◦ with the horizontal and that the coefficient of static friction between your tires and the street is 0.80. You also find that the coefficient of kinetic friction between your tires and the street is 0.60. Your car’s information book tells you that the mass of your car is 1600 kg. You weigh 140 lbs. Will you fight the ticket in court?arrow_forwardWhen visiting a friend in Atlanta you decide to drive around the city. You turn a corner and are driving up a steep hill. Suddenly, a small boy runs out on the street chasing a ball. You slam on the brakes and skid to a stop leaving a 50-foot-long skid mark on the street. The boy calmly walks away but a policemen watching from the sidewalk walks over and gives you a speeding ticket. He points out that the speed limit on this street is 25mph. After you recover your wits, you begin to examine the situation. You determine that the street makes an angle of 25◦ with the horizontal and that the coefficient of static friction between your tires and the street is 0.80. You also find that the coefficient of kinetic friction between your tires and the street is 0.60. Your car’s information book tells you that the mass of your car is 1600 kg. You weigh 140 lbs. Will you fight the ticket in court? Please draw a figure with your detailed answer.arrow_forward
- During their physics field trip to the amusement park, Tyler and Maria took a rider on the Whirligig. The Whirligig ride consists of long swings which spin in a circle at relatively high speeds. As part of their lab, Tyler and Maria estimate that the riders travel through a circle with a radius of 6.5 m and make one turn every 5.8 seconds. Determine the speed of the riders on the Whirligig.arrow_forwardYou throw a ball to the sky to check the dynamics of its speed. When the ball is going up, its speed is decreasing as the gravitational force is working downwards. However, after some time, the ball will reach the pick position and will start coming back to the ground. At this moment, the speed of the ball will be increasing with time. What would happen to its acceleration?arrow_forward5. A particle travels in a circle of radius 12 m at a constant speed of 21 m/s. What is the magnitude of the acceleration? 6. The velocity of a particle in reference frame A is (4.0 î+ 5.0ĵ) m/s. The velocity of reference frame A with respect to reference frame B is 6.0 k m/s, and the velocity of reference frame B with respect to C is 2.0 j m/s. What is the velocity of the particle in reference frame C?arrow_forward
- An object has an acceleration that is directed opposite of its motion. What is true of the object? O It is moving in a circle. O It is slowing down. O It is moving at a constant speed. O It is speeding up. O It is moving vertically. 6 7 4.arrow_forwardA 615 kg racing car completes one lap in 14.3 seconds around a circular track with a radius of 50.0 meters. The car moves with a constant speed. What is the acceleration of the car and what is the force must the track exert on the tires to produce this acceleration?arrow_forwardA planet has a mass equals to the mass of Earth and a radius 1.2 times the radius of Earth. What is the magnitude of the acceleration of a body falling near the surface of this plant in m/s2 ? Give your answer to three significant figures.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
Principles of Physics: A Calculus-Based Text
Physics
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning