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Centripetal Force

how much work...

Question

how much work is done by an applied force to lift a 25 N block,5m vertically at a constant speed.

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Solution

$W o r k d o n e r e q u i r e d t o l i f t 25 N b l o c k t o a h e i g h t f 5 m = p o t e n t i a l e n e r g y o f t h e b l o c k a t t h a t p o s i t i o n . W o r k d o n e (W) = F \times h = 25 \times 5 = 125 J .$

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