Homework Help: physics

Posted by lisa on Friday, June 1, 2012 at 5:41pm.

Wally now lift the box of the floor and put it on a shelf. Does he doing any work? If not why? If so .what energy change is accurring?

physics - Elena, Saturday, June 2, 2012 at 8:17am
The change of potential energy is
ΔPE =mgΔh
Work W = ΔPE

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