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if the zero level is a distance 2h/3 above the floor, what is the potential energy u of the block on the floor? express your answer in terms of some or all the variables m , v , and h and any appropriate constants.



Answer :

If the zero level is a distance 2h / 3 above the floor, the potential energy U of the block on the floor is - 2 m g h / 3

U = m g h

U = Potential energy

m = Mass

g = Acceleration due to gravity

h = Height

h = - 2 h / 3

U = - 2 m g h / 3

Here, the ground is not taken as zero level. But a point height 2 h / 3 is taken as zero level. So the block falls down a height of 2 h / 3. Since the movement is downwards the change in distance - 2 h / 3.

Therefore, if the zero level is a distance 2h / 3 above the floor, the potential energy U of the block on the floor is - 2 m g h / 3

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