State and explain the work done in the following situation : A man spending his energy by pushing on a concrete wall.

State and explain the work done in the following situation : A person carrying a heavy load walks on a level road.

State and prove the work energy theorem for constant force.

. In the following daily situations which will be selected? White washing of walls

State work energy theorem.

State work energy theorem.

find out the sign of work done in the following cases: work done by an applied force on a moving on a rough horizontal plane.