a man moves on platform with a box of 20 kg on his head . if he covers a distance of 10 meters with an acceleration of 0.5 m/s . find the work done by the man on the box during the motion ?
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Answer:
0
Explanation:
Since angle between box and ground is 90 degree so work = force×displacement ×cos theta. Theta 90 =0 so work =0
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