Question

A book of mass 1 kg is on the floor. If the book is lifted from the floor to the top shelf which is 2 meters from the floor, how much work is done on the book?

Answer 1

Answer:

Workdone = Force * Dispalacement Force = Mass * Acceleration( Here gravity, since accelreation not given) Workdone = Mass * Gravity * Displacement = 1 * 9.8 * 2 = 19.6 Joules Therefore, the workdone is 19.6 Joules.