Ablock ofmassMis pulled along a horizontal frictionless surface by a rope of mass m. If a force F is applied at one end of the rope, the force which the rope exerts on the block is

A monkey of mass m is climbing a rope with uniform speed; the tension in the rope will be

If the normal reaction force is doubled, the coefficient of friction is

Alift ismoving upwardswith a uniformvelocity v in which a block of mass m is lying. The frictional force offered by the block, when coefficient of friction is μ, will be

A player caught a cricket ball of mass 150 g moving at a rate of 20 m/s. If the catching process be completed in 0.1 s, the force of blow exerted by the ball on the hands of the player is

When a horse pulls a cart, the force that helps the horse to move forward is the force exerted by

Which of the following statements about friction is true?

A body is lying on rough inclined plane. The force of friction acting on it, if the plane is raised continuously, till it starts moving

A lift is moving down with acceleration a. A man in the lift drops a ball inside the lift. The acceleration of the ball as observed by theman in the lift and a man standing stationary on the ground are respectively:

A box is placed on an inclined plane and has to be pushed down. The angle of inclination is:

In the system shown in the adjoining figure,

A truck and a car are moving with equal velocity. On applying the brakes bothwill stop after certain distance; then (assume that both brakes have equal retarding force)