STATEMENT-1: It is easier to pull a heavy object than to push it on a level ground.
and
STATEMENT-2: The magnitude of frictional force depends on the nature of the two surfaces in contact.
← IIT-JEE 2008 · Paper 2
PhysicsAssertion and reason+3 / -1Question 33 of 66
IIT-JEE 2008 · Paper 2, Physics question 33
Answer and worked solution
Official answer: B
Statement 1. Pulling at an angle above the horizontal has an upward component that reduces the normal force and hence friction; pushing at an angle below the horizontal increases it. So pulling is easier. True.
Statement 2. Friction does depend on the nature of the surfaces (through μ). True, but that is not why pulling is easier.
(B)
Topics:Friction