Assertion `:-` It is easier to pull a heavy object than to push it on a level ground.
Reason `:-` The magnitude of frictional force depends on the nature of the two surface in contact.

STATEMENT-1: It is easier to pull a heavy object than to push it on a level ground and STATEMENT-2: The magnitude fo frictional force depends on the nature of the two surfaces in contact.

Maximum static friction force depend on area of surfaces in contact.

Assertion: Magnitude of the contact force is always greater than the magnitude of frictional force. Reason: Contact force is the resultant of the friction force and normal reaction.

Which one of the force does not depend on the velocity - frictional force between contact surface of two solid or viscous force ?

Assertion: Static frictional force is a self adjusting force. Reason: Force of static friction does not depend upon the mass of the body.

Assertion :- When a man climbs the rope friction force acts in downward direction. Reason :- Friction force opposes relative motion to tendency of relative motion between two contact surfaces.

Assertion :- when two non parallel forces F_(1) and F_(2) act on a body. The magnitude of the resultant force acting on the is less than the "sum" of F_(1) and F_(2) Reason :- In a triangle, any side is less then the "sum" of the other two sides.

Assertion: Pulling a lawn roller is easier than pushing it. Reason:Pushing increases the apparent weight and hence the force of friction.

Two blocks A and B of mass 2 kg and 4 kg respectively are placed on a smooth inclined plane and 2 kg block is pushed by a force F acting parallel to the plane as shown. If N be the magnitude of contact force applied on B by A, which of the following is/are correct?

Assertion: A vector quantity is a quantity that has both magnitude and a direction and obeys the triangle law of addition or equivalent the parallelogram law of addition. Reason: The magnitude of the resultant vector of two given vectors can never be less than the magnitude of any of the given vector.