Question

23) A book of mass 1 kg is placed on a shel located at a height of 5nr from the top of a table which is 1.5m high. What is its P.E? TA160J B) 641 C) 68): D) 70J​

Answer 1

Answer:

Let me assume that the only force opposing your force is gravitational force. In that case, I may write the work done as.