A scooter weighs 120 kg f. Brakes are applied so that wheels stop rolling and start skidding. Find the force of friction if the coefficient of friction is `0.4`.

A force F is applied at the centre of a disc of mass M. The minimum value of coefficient of friction of the surface for rolling is

A force F is applied at the centre of a disc of mass M. The minimum value of coefficient of friction of the surface for rolling is

A 20 kg metal block is placed on a horizontal surface. The block just begins to slide when horizontal force of 100N is applied to it . Calculate the coefficient of static friction . If coefficient of kinetic friction is 0.4 then find minimum force to maintain its uniform motion.

A force of 49 N just able to move a block of wood weighing 10 kg on a rough horizontal surface , then coefficient of friction is

A force of 49 N just able to move a block of wood weighing 10 kg on a rough horizontal surface , then coefficient of friction is

A force of 100 gm wt. is required to pull a body weighing 1 kg over ice. The coefficient of friction is

Assertion: When brakes are applied on a wet road, a car is likely to skid. Reason: Brakes prevent rotation of the wheels, and there is not sufficient friction between the road and the whells.

Assertion: When brakes are applied on a wet road, a car is likely to skid. Reason: Brakes prevent rotation of the wheels, and there is not sufficient friction between the road and the whells.

Assertion: When brakes are applied on a wet road, a car is likely to skid. Reason: Brakes prevent rotation of the wheels, and there is not sufficient friction between the road and the whells.