Ravi applied a force of 10 N and moved a book 30 cm in the direction of the force. How much was the work done by Ravi ?

Raj applied a force of 20 N and moved a book 40 cm in the direction of the force. How much was the work done by Raj?

Megha applied a force of 50 N to move a stool from one comer of a 10 m long room to other. Calculate the work done by Megha.

Calculate the work done when a force of 60 N displaces a body through 10 m in the direction of the force.

If the displacement is not in the direction of the applied force, how do we calculate the amount of work done?

Solve the following examples: A force of 20 N acts on a body. If the displacement of the body is 0.6 m in the direction opposite to that of the force, calculate the work done by the force.

You have learnt how to calculate the work done on an object when the displacement is in the direction of the applied force. But if the displacement is not in the direction of the applied force, how do we calculate the amount of work done

When a force of 30 N acts on a body, the body is displaced by 10 m in the direction inclined at 60^@ to the force. Find the work done by the force.

If one end of a wire is fixed with a rigid support and the other end is streched by a force of 10N , then the increae in length is 0.5mm . The ratio of the energy of the wire and the work done in displacing it through 0.5mm by the weight is

Pravin has applied a force of 100 N on an object, at an angle of 60° to the horizontal. The object gets displaced in the horizontal direction and 400 J work is done. What is the displacement of the object?

Pravin has applied a force of 100 N on an object, at an angle of 60^@ to the horizontal. The object gets displaced in the horizontal direction and 400 J work is done. What is the disptacement of the object? (cos 60^@ =1/2)