A box of 7 kg is being lifted through means of a light rope, Ask an Expert

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A box of 7 kg is being lifted through means of a light rope which is threaded via a single, light, frictionless pulley which is joined to the ceiling.

(i) When the box is being lifted at a constant speed of 2.0 m/s, determine the power delivered by the person pulling on the rope?

(ii) When the box is lifted, at constant acceleration, from rest on the floor to the height of 1.8 m above the floor in 0.42 s, determine what average power is delivered by the person pulling on the rope?

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Category:- Physics
Reference No.:- M91123850

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