Question

A human walks along with the constant velocity holding a suitcase how much work is done by the force holding a case.

Answer 1

The work done is zero as when the human is holding a suitcase as he applies a downward force on the suitcase whereas the displacement is in the forward direction

So the angle formed between force and displacement is 90 degree and we know that when the angle between force and displacment is 90 degree... The work done is zero

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