1.

If a man pushes a heavy box and the boxdoes not move, he does no work. Explain briefly.​

Answer»

Work power and energyExplanation:Work = Force • Displacement Force and displacement both are VECTOR quantity.Work done is dot PRODUCT of Force and displacement So ; If a man applies force on BOX ,Box does not move then displacement is ZERO but force is not zero . So ; Force multiply by zero displacement the result would be zero . ANSWER :- Hence ; Work done by man on box would be zero.



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