How Much work is done on an object by the force that supports it as the object is lowered at a constant speed through a vertical distance n? how much work does the gravitational force on the object do in the same process?
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Expert's answer
2016-10-19T14:05:12-0400
The work of the support force: w = -mgn (because the force and displacement have opposite directions)
The work of the gravitational force: w = mgn (because the gravitational force and the displacement have equal directions)
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