Question

Give two examples in which no work is done.Explain why.​

Answer 1

1. When a table in on a floor at the same place for days together, there is no work done on the table by the gravitational force or normal reaction force.

2. If I hold a book for some time, there is no work done on it by me.

Here is your answer

Answer 2

when we push the wall it doesn't move so in this case work is not done