“Gravitational Potential Energy and Kinetic Energy”
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A man of mass runs up a staircase consisting of steps. Each step is high. The man takes a time of to run from the bottom of the staircase to the top. What is the average rate of increase of gravitational potential energy of the man?
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runs up a staircase consisting of 
steps. Each step is 
high. The man takes a time of 
to run from the bottom of the staircase to the top. What is the average rate of increase of gravitational potential energy of the man?
