A person in an elevator moving upward at 10 m/s lifts a 60 kg mass 1.5 m
Question:
A person in an elevator moving upward at 10 m/s lifts a 60 kg mass 1.5 m off the elevator floor in 2 s. How much work did the person do relative to the elevator? How much relative to the ground? Why are these different, and what happens to the energy in each case?
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The work done by the person relative to the elevator can be found using the formula W Fd where W is ...View the full answer
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Related Book For 
Thermodynamics Fundamentals And Engineering Applications
ISBN: 9780521862738
1st Edition
Authors: William C. Reynolds, Piero Colonna
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