Question

A coolie lifts a suitcase and walks from the platform to an overhead bridge. the work done by coolie. a)positive b)negative c) zero

Answer 1

Answer:

c) zero

Explanation:

becoz he is not doing any work just lifting the coolie

Answer 2

Answer:

a) positive

Explanation:

The work done is positive as the coolie is lifting the suitcase which results in the work done against gravity. Then displacement is there when he is carrying the suitcase to the overhead bridge.