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)

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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