You push very hard on a heavy desk, trying to move it. Youdo work on the desk:(a) whether or not it moves, as long as you are exerting aforce.(b) only if it starts moving.(c) only if it doesn’t move.(d) never—it does work on you.(e) None of the above

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Chapter8: Potential Energy And Conservation Of Energy
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You push very hard on a heavy desk, trying to move it. You
do work on the desk:
(a) whether or not it moves, as long as you are exerting a
force.
(b) only if it starts moving.
(c) only if it doesn’t move.
(d) never—it does work on you.
(e) None of the above

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