Question

Rahul pushes a book of mass 2 kg on the table from point A to point B, which are 1 m away from each other. What is the work done by the gravitational force on the book?

Answer 1

Answer:

The work done by gravitational force, W= gravitational force × displacement =m(−g)h ( g is negative sign because the book is lifted against gravitational force)

or W=2(−10)1.5=−30J