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A sphere of mass 1 kg rests at one corne...

A sphere of mass `1 kg` rests at one corner of a cube. The cube is moved with a velocity `v =(8 t hat(i) - 2t^(2)) hat(j)`, where `t` is time in second . The force by sphere on the cube at `t = 1 s` is `(g = 10 m//s^(-2))` [figure shown vertical plane of the cube]

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The correct Answer is:
(a) 3 s; (b) (6,0,12)
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