ssume that a man lifts 800 kg, the mass of half of the car, and a height of 0.5 m. What is the gravitational potential energy supplied by Wonder Woman when lifting the back of the car? PE= mgh= (800kg)(9.81m/s2)(0.5m)= 3,924 J Calculate the power he exerts when lifting the car over a time interval of 5 seconds. (I just need help with the second half)
ssume that a man lifts 800 kg, the mass of half of the car, and a height of 0.5 m. What is the gravitational potential energy supplied by Wonder Woman when lifting the back of the car? PE= mgh= (800kg)(9.81m/s2)(0.5m)= 3,924 J Calculate the power he exerts when lifting the car over a time interval of 5 seconds. (I just need help with the second half)
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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Assume that a man lifts 800 kg, the mass of half of the car, and a height of 0.5 m. What is the gravitational potential energy supplied by Wonder Woman when lifting the back of the car?
PE= mgh= (800kg)(9.81m/s2)(0.5m)= 3,924 J
Calculate the power he exerts when lifting the car over a time interval of 5 seconds.
(I just need help with the second half)
Expert Solution
Step 1
Work done = Gravitational potential energy
Work done , W = 3924 J
(b) Time , t = 5 seconds
Power , P = Work done divided by time taken
P = W/t
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