Question

a porter keep standing at a place while holding a suitcase of mass 20 kg over his head for 5 minutes has he done some work give reasons for your answer

Answer 1

as the force acting perpendicular to object the force is zero the work done is also zero

Answer 2

Hi!!

here is a simple answer which you can write in exam.

☀No, he has not done any work. Work is said to be done only when a force is applied and there is displacement of the object. Here, there is no displacement of the object, i.e. the suitcase therefore we can conclude that no work has been done by him.

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