Question

state weaher work is done or not justify your answer :
1) a student reads a book
2) the revolution of earth around the sun

Answer 1

1. no
2. yes...........

Answer 2

the work not done in both the cases. a student reads a book , no displacement is done
in second case the displacement also don't takes place bcz it comes to it's initial position again
so displacement is zero
PLEASE MARK IT AS BRAINLIEST