How much work is done when a force of 2 N moves a body through a distance of 10 cm in the direction of force?

A person of mass 50 kg climbs a tower of height 72 metres. Calculate the work done. (g = 9.8 m/s²)

When do we say that work is done? Write the formula for the work done by a body in moving up against gravity. Give the meaning of each symbol which occurs in it.

What happens to the work done when the displacement of a body is at right angles to the direction of force acting of it? Explain your answer.

A force of 50 N acts on a body and moves it a distance of 4 m on a horizontal surface. Calculate the work done if the direction of force is at an angle 60^o to the horizontal surface.