A force F acts on a body such that it is always at an angle of `45^@` to the direction of motion. The body moves in a circle and covers a semicircle of radius R. What is the work done by the force F?

A force of 20 N acts on a body and the body moves through 1 m at an angle of 45^(@) in the direction of the force. The work done by the force is

When a body moves in a circle, the work done by the centripetal forces is always

A Force F acts on a body and displaces it by a distance S in direction at an angle theta with the direction of force ,(a) Write the expression for the work done by the force,(b)What should be the angle between the force and displacement so that the work done is (i)zero ,(ii)Maximum ?

How is work done measured when, The force is inclined to the direction of motion of the body?

How is work done measured when, The force acts along the direction of motion of the body

A force of 5 N acts on a 15 kg body initially at rest. The work done by the force during the first second of motion of the body is

A force acts perpendicular to the direction of motion of a body. What is work done?

The velocity of a body moving in a straight line is increased by applying a constant force F, for some distance in the direction of the motion. Prove that the increase in the kinetic energy of the body is equal to the work done by the force on the body.

The velocity of a body moving in a straight line is increased by applying a constant force F, for some distance in the direction of the motion. Prove that the increase in the kinetic energy of the body is equal to the work done by the force on the body.