Question

work is done, when
a) A boy pushing a tree
b) A man pushing a lawn mower on a circular path.
c) A man is pushing a pram in a straight line.
d) A child is standing with his bag at the bust stand.
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Answer 1

Answer:

b is the answer .

Explanation:

work means doing some action with the usage of energy and the application of force so here the man uses his energy and applies force to move the lawn mower

Answer 2

Answer:

Work is done in option c and b, because the work is only done when displacement occurs and in option c and b it is occurring. in option a the tree will not displce from its position and in option d the child and his bag do not displaces so no work is done.