I Inbox (29)- kriver1...Data SheetWeight (lb)170Weight (N)0.1880Height of single step (m)Number of steps climbedTotal height climbed (m)4219Time to walk stairs (s)Time to run stairs (s)WalkingRunningWork (J)Power (W)Power (hp)a近 66/ViewM Recibidos (1,308) -.M Inbox (29) - kriver1...OCengageBrain - Log...Webex Mat 272CitriObjectiveW(2)In this experiment you will calculate the power youdevelop when climbing a flight of stairs.The SI unit of power is a watt (W), which is equivalentto a J/s.ApparatusWhen James Watt invented his steam engine, he wasasked how many horses the engine could replace. Tofind out, he built a rope-and-pulley device with whichhe could measure the time it took a horse to lift var-ious weights.Stairs, Stopwatch, Meter stick.TheoryConsider the (rather crude) person climbing a flight Watt defined horsepower as the power a horse canproduce steadily for a sustained period of time. TheSI equivalent of one horsepower is 746W.of stairs as shown below.Procedure1. Record your weight in lb on the Data Sheet; ap-proximate if you do not know. Convert this toN.2. Take a stopwatch and meter stick and locateSome stairs that can be used for the experiment.You want to climb at least 2m vertically, so thisTmight be more than one section of stairs if thestaircase turTIs as it. rises.Work W is defined as the product of a force F anddistance d; specifically the component of the force inthe direction of the movement.3. Mcasure the height of one step and count thetotal number of steps you will be climbing.Record these values and calculate the totaltical height.W = FdFor the person climbing the stairs the force they aremoving is their own weight w. This force acts straightdown, so in climbing a vertical height y the work done4. Tine how long it takes vou to walk up the stairs,repeat for running (safely) up the stairs.is5. Calculate the work done both in walking and run-ning the stains with Equation 1. Calculate thepower in cach case with Equialion 2. Convert thepower in W Lo hp.(1)hm = MThe SI unit of work is a joule (J), which is equivalentto a Nm.Power is the rate at which work is done If it takesthe person time t to climb then the power P is

The weight in Newton is given by W=170 lb4.4482216153 N1 lb=756 N The total height he climbed is…

Weight (lb) 70 170 Weight (N) 0.18 80 Height of single step (m) Number of steps climbed Total height climbed (m) 42 19 Time to walk stairs (s) Time to run stairs (s) Walking Running Work (J) Power (W) Power (hp)

Weight (lb) 70 170 Weight (N) 0.18 80 Height of single step (m) Number of steps climbed Total height climbed (m) 42 19 Time to walk stairs (s) Time to run stairs (s) Walking Running Work (J) Power (W) Power (hp)

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter16: Waves

Section: Chapter Questions

Problem 43P: (a) Seismographs measure the arrival times of earthquakes with a precision of 0.100 s. To get the...

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Question

I Inbox (29)- kriver1...
Data Sheet
Weight (lb)
170
Weight (N)
0.18
80
Height of single step (m)
Number of steps climbed
Total height climbed (m)
42
19
Time to walk stairs (s)
Time to run stairs (s)
Walking
Running
Work (J)
Power (W)
Power (hp)
a
近

66/View
M Recibidos (1,308) -.
M Inbox (29) - kriver1...
OCengageBrain - Log...
Webex Mat 272
Citri
Objective
W
(2)
In this experiment you will calculate the power you
develop when climbing a flight of stairs.
The SI unit of power is a watt (W), which is equivalent
to a J/s.
Apparatus
When James Watt invented his steam engine, he was
asked how many horses the engine could replace. To
find out, he built a rope-and-pulley device with which
he could measure the time it took a horse to lift var-
ious weights.
Stairs, Stopwatch, Meter stick.
Theory
Consider the (rather crude) person climbing a flight Watt defined horsepower as the power a horse can
produce steadily for a sustained period of time. The
SI equivalent of one horsepower is 746W.
of stairs as shown below.
Procedure
1. Record your weight in lb on the Data Sheet; ap-
proximate if you do not know. Convert this to
N.
2. Take a stopwatch and meter stick and locate
Some stairs that can be used for the experiment.
You want to climb at least 2m vertically, so this
Tmight be more than one section of stairs if the
staircase turTIs as it. rises.
Work W is defined as the product of a force F and
distance d; specifically the component of the force in
the direction of the movement.
3. Mcasure the height of one step and count the
total number of steps you will be climbing.
Record these values and calculate the total
tical height.
W = Fd
For the person climbing the stairs the force they are
moving is their own weight w. This force acts straight
down, so in climbing a vertical height y the work done
4. Tine how long it takes vou to walk up the stairs,
repeat for running (safely) up the stairs.
is
5. Calculate the work done both in walking and run-
ning the stains with Equation 1. Calculate the
power in cach case with Equialion 2. Convert the
power in W Lo hp.
(1)
hm = M
The SI unit of work is a joule (J), which is equivalent
to a Nm.
Power is the rate at which work is done If it takes
the person time t to climb then the power P is

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