Lab 7
.docx
keyboard_arrow_up
School
Reedley College *
*We aren’t endorsed by this school
Course
10
Subject
Mechanical Engineering
Date
Dec 6, 2023
Type
docx
Pages
3
Uploaded by MasterIron1312
Conservation of Energy at the Skate Park
1.
Place the skater at the top of the half-pipe and press the > button to allow him to move.
Make sure he starts from rest!
a.
Describe what happens to the skater:
The skater starts at the top and gets to the opposite of the ramp. The potential energy
reaches its highest, when the skater got to the top of the ramp and the kinetic energy goes down as the skater goes up the
ramp.
b.
Turn on the Bar graph and Speed indicator and complete the energy chart below by pausing the motion at the different
points indicated:
2.
Discuss the energy changes that you see in the bar charts. The bar chart shows the following energies:
Energy of motion (Kinetic energy),
Energy due to the skater’s height above ground (Gravitational potential energy)
Total mechanical energy (Kinetic energy + Gravitational Potential Energy)
Thermal Energy (Heat energy generated by friction)
i.
Which energy bar stayed constant ALL THE TIME:
The total mechanical energy.
ii.
Which energy was at a maximum when the skater has a the top of the pipe:
Gravitational
potential energy.
iii.
Which energy was at a maximum when the skater was at the bottom of the pipe:
Kinetic energy.
This study source was downloaded by 100000809545535 from CourseHero.com on 10-12-2023 22:57:07 GMT -05:00
https://www.coursehero.com/file/81266649/51-skatepark-conservation-of-energydocx/
Top Right of Ramp
Bottom of Ramp
Top Left of Ramp
iv.
Which energy always stayed at zero?
Thermal Energy
(This makes sense because there Is no
friction here!
c.
Turn on the speed dial. Discuss the skater’s speed at the top and bottom of the pipe
.
Speed at top of pipe:
Speed at the
lowest level of the scale.
Speed at bottom of pipe:
Speed increases to half of the scale, it doesn’t go all the way up.
d.
Explain how the speed is connected to the energy values in part c.
When potential energy is at the
highest level, speed is at the lowest. Kinetic levels increase when the skater hits the highest speed, which happens at
the bottom.
3
. Click on the Friction Icon at the Bottom of the screen
.
Run the simulation again with friction in the MIDDLE of the setting range:
a) Complete the chart.
b. Discuss what happens to the skater over time in this case.
Due to a decrease of both
the kinetic and potential levels and an increase of thermal levels, the skater would eventually stop over
time.
C. Why does the skater eventually stop?
With increased thermal
levels, friction will eventually stop the skaters movement
Consolidation Questions:
1.
Discuss what happens to the form of energy as the skater rolls down the hill.
(Hint: discuss the conversion of energy).
The energy changes depend on the position of the skater and
friction. As the skater rolled down the ramp, kinetic energy was at its maximum, while potential energy was at its
This study source was downloaded by 100000809545535 from CourseHero.com on 10-12-2023 22:57:07 GMT -05:00
https://www.coursehero.com/file/81266649/51-skatepark-conservation-of-energydocx/
Top Right of Ramp
Bottom of Ramp
Top Left of Ramp
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
Which of the following statement is not correct?
O a. A bus going down the valley may have variable acceleration.
O b. A lift going down in a gold mine canrnot have constant acceleration in the entire Journey.
O c. In a cricket match, the ball does not move with constant acceleration.
O d. A body falling freely under the force of gravity is an exarmple of motion under variable acceleration.
Question 12
Not vet
arrow_forward
Which of the following statement is not correct?
O a. A lift going down in a gold mine cannot have constant acceleration in the entire Journey.
O b. A bus going down the valley may have variable acceleration.
O c. In a cricket match, the ball does not move with constant acceleration.
O d. A body falling freely under the force of gravity is an example of motion under variable acceleration.
arrow_forward
What occurs during acceleration, which shifts the weight of the car from the front to the back
arrow_forward
If energy cannot be lost why does a ball stop move
arrow_forward
How is tilting action possible in crane for unloading the mining material using hydraulic power?
1. Tilting action is possible if, oil flows at high pressure into the cylinder
2. Tilting action is possible if, air flows at low pressure into the cylinder
3. The truck body tilts when piston rod in the actuator is pushed out.
4. Tilting action is possible if air is compressed at high pressure
a.
3 and 4
b.
1 and 3
c.
2 and 4
d.
1,2,3 and 4
arrow_forward
Which of the following statement is not correct?
O a. A bus going down the valley may have variable acceleration.
O b. A body falling freely under the force of gravity is an example of motion under variable acceleration.
O C. A lift going down in a gold mine cannot have constant acceleration in the entire Journey.
O d. In a cricket match, the ball does not move with constant atceleration.
arrow_forward
Find reaction at A.
CLO 3, PLO 2
A
B
L/2
L/2
arrow_forward
Find the correct statement
with respect to Newton's
second law of motion.
a. For rotating bodies,
torque is directly
proportional to rate of
change of angular
momentum.
O b. For reciprocating
bodies, torque is
directly proportional to
rate of change of
angular momentum.
c. For reciprocating
bodies, impressed
force is inversely
proportional to rate of
change of linear
momentum.
d. For rotating bodies,
impressed force is
directly proportional to
rate of change of
linear momentum.
arrow_forward
The impending motion is applied when the body is
Select one:
O a. Just stopped
O b.
Stopped
OC Just start to move
Od. Moving
arrow_forward
2. Average speed is defined as
a.
b.
C.
At
As
At
ST
At
d. None of the above
arrow_forward
How is tilting action possible in trucks for unloading the gravel material using hydraulic power?
1. Tilting action is possible if, oil flows at high pressure into the cylinder
2. Tilting action is possible if, air flows at low pressure into the cylinder
3. The truck body tilts when piston rod in the actuator is pushed out.
4. Tilting action is possible if air is compressed at high pressure
Select one:
O a. 1 and 3
O b. 3 and 4
O c. 2 and 4
O d. 1 and 2
arrow_forward
Counter and explain all the forces acting on a moving vehicle. Note: Do not include driving force.
arrow_forward
Kinetics: The curve produced when v is plotted against (s) is described as
arrow_forward
Using Free Hand Sketch, Draw the Three Views for Tow of the following bodies.
HAVE A GOOD LUCK
mOORALDEEM S.K.
arrow_forward
When acceleration can be zero?
arrow_forward
None
arrow_forward
C. SHOW THE COMPLETE SOLUTION
arrow_forward
Dry friction:
O Produces a force normal to the surfaces of contact.
Occurs only when two objects are moving past each other.
Occurs when objects are in a condition of sliding or a tendency to slide.
O Occurs only when two objects are in a condition of a tendency to slide.
arrow_forward
explain in a detailed manner how a bike start running when kick to the lever rod
arrow_forward
Show all the forces acting on the fire hydrant nozzle and explain the cause of the force.??
arrow_forward
A motor winds in the cable as shown at a constant rate. Which of the following is
true?
Ур
W
R
yQ
YR
a) Pulley P moves upward twice as fast as pulley Q.
b) Pulley Q moves upward twice as fast as Pulley P.
c) Pulley P and Q both have the same speed.
d) Pulley P moves upward 3-times as fast as the motor winds in the cable.
arrow_forward
Which of the following choices best represents force?
A. A push or pull always causing motion
B. A push or pull always causing acceleration
C. A push or pull acting without another object
D. A push or pull acting on an object
arrow_forward
If the particle is projected vertically upwards, it travels against the
O a. Gravitational Force
O b. Inertia Force
O C. Friction Force
O d. Impact Force
arrow_forward
1. Two pumps are connected in parallel, if Q1 is the discharge of pump 1 and Q2 is the discharge of pump 2, where Q2 > Q1, what is the discharge?A. Q1B. Q1 + Q2 c. Q2D. Q1-Q2
2. If Hi is the indicated horsepower and HB is the indicated brake horsepower of a compressor, then what is mechanical eficiency, Em, equal to?
A. Em = HB/HiB. Em = Hi/HBC. Em = HB - HiD. Em = Hi -HB
arrow_forward
Explain answer and not Copypaste
arrow_forward
Answer clearly
arrow_forward
SEE MORE QUESTIONS
Recommended textbooks for you
Automotive Technology: A Systems Approach (MindTa...
Mechanical Engineering
ISBN:9781133612315
Author:Jack Erjavec, Rob Thompson
Publisher:Cengage Learning
Precision Machining Technology (MindTap Course Li...
Mechanical Engineering
ISBN:9781285444543
Author:Peter J. Hoffman, Eric S. Hopewell, Brian Janes
Publisher:Cengage Learning
Related Questions
- Which of the following statement is not correct? O a. A bus going down the valley may have variable acceleration. O b. A lift going down in a gold mine canrnot have constant acceleration in the entire Journey. O c. In a cricket match, the ball does not move with constant acceleration. O d. A body falling freely under the force of gravity is an exarmple of motion under variable acceleration. Question 12 Not vetarrow_forwardWhich of the following statement is not correct? O a. A lift going down in a gold mine cannot have constant acceleration in the entire Journey. O b. A bus going down the valley may have variable acceleration. O c. In a cricket match, the ball does not move with constant acceleration. O d. A body falling freely under the force of gravity is an example of motion under variable acceleration.arrow_forwardWhat occurs during acceleration, which shifts the weight of the car from the front to the backarrow_forward
- If energy cannot be lost why does a ball stop movearrow_forwardHow is tilting action possible in crane for unloading the mining material using hydraulic power? 1. Tilting action is possible if, oil flows at high pressure into the cylinder 2. Tilting action is possible if, air flows at low pressure into the cylinder 3. The truck body tilts when piston rod in the actuator is pushed out. 4. Tilting action is possible if air is compressed at high pressure a. 3 and 4 b. 1 and 3 c. 2 and 4 d. 1,2,3 and 4arrow_forwardWhich of the following statement is not correct? O a. A bus going down the valley may have variable acceleration. O b. A body falling freely under the force of gravity is an example of motion under variable acceleration. O C. A lift going down in a gold mine cannot have constant acceleration in the entire Journey. O d. In a cricket match, the ball does not move with constant atceleration.arrow_forward
- Find reaction at A. CLO 3, PLO 2 A B L/2 L/2arrow_forwardFind the correct statement with respect to Newton's second law of motion. a. For rotating bodies, torque is directly proportional to rate of change of angular momentum. O b. For reciprocating bodies, torque is directly proportional to rate of change of angular momentum. c. For reciprocating bodies, impressed force is inversely proportional to rate of change of linear momentum. d. For rotating bodies, impressed force is directly proportional to rate of change of linear momentum.arrow_forwardThe impending motion is applied when the body is Select one: O a. Just stopped O b. Stopped OC Just start to move Od. Movingarrow_forward
- 2. Average speed is defined as a. b. C. At As At ST At d. None of the abovearrow_forwardHow is tilting action possible in trucks for unloading the gravel material using hydraulic power? 1. Tilting action is possible if, oil flows at high pressure into the cylinder 2. Tilting action is possible if, air flows at low pressure into the cylinder 3. The truck body tilts when piston rod in the actuator is pushed out. 4. Tilting action is possible if air is compressed at high pressure Select one: O a. 1 and 3 O b. 3 and 4 O c. 2 and 4 O d. 1 and 2arrow_forwardCounter and explain all the forces acting on a moving vehicle. Note: Do not include driving force.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Automotive Technology: A Systems Approach (MindTa...Mechanical EngineeringISBN:9781133612315Author:Jack Erjavec, Rob ThompsonPublisher:Cengage LearningPrecision Machining Technology (MindTap Course Li...Mechanical EngineeringISBN:9781285444543Author:Peter J. Hoffman, Eric S. Hopewell, Brian JanesPublisher:Cengage Learning
Automotive Technology: A Systems Approach (MindTa...
Mechanical Engineering
ISBN:9781133612315
Author:Jack Erjavec, Rob Thompson
Publisher:Cengage Learning
Precision Machining Technology (MindTap Course Li...
Mechanical Engineering
ISBN:9781285444543
Author:Peter J. Hoffman, Eric S. Hopewell, Brian Janes
Publisher:Cengage Learning