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JEE Main
IMPORTANT
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Can a tug of war be ever won on a frictionless surface?

Important Questions on Friction

HARD
JEE Main
IMPORTANT
CONCEPTS OF PHYSICS [VOLUME 1]>Chapter 6 - Friction>QUESTIONS FOR SHORT ANSWER>Q 9
Why do tyres have a better grip of the road while going on a level road than going on an incline?
MEDIUM
JEE Main
IMPORTANT
CONCEPTS OF PHYSICS [VOLUME 1]>Chapter 6 - Friction>QUESTIONS FOR SHORT ANSWER>Q 10
You are standing with your bag in your hands on an ice in the middle of a pond. The ice is so slippery that it can offer no friction. How can you come out of the ice?
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JEE Main
IMPORTANT
CONCEPTS OF PHYSICS [VOLUME 1]>Chapter 6 - Friction>QUESTIONS FOR SHORT ANSWER>Q 11
When the two surfaces are polished, the friction coefficient between them decreases. But the friction coefficient increases and becomes very large if the surfaces are made highly smooth. Explain.
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JEE Main
IMPORTANT
CONCEPTS OF PHYSICS [VOLUME 1]>Chapter 6 - Friction>OBJECTIVE I>Q 1
In a situation, the contact force by a rough horizontal surface, on a body placed on it, has constant magnitude. If the angle between this force and the vertical is decreased, the frictional force between the surface and the body will
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JEE Main
IMPORTANT
CONCEPTS OF PHYSICS [VOLUME 1]>Chapter 6 - Friction>OBJECTIVE I>Q 2
While walking on ice, one should take small steps to avoid slipping. This is because smaller steps ensure
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JEE Main
IMPORTANT
CONCEPTS OF PHYSICS [VOLUME 1]>Chapter 6 - Friction>OBJECTIVE I>Q 3
A body of mass M is kept on a rough horizontal surface (friction coefficient=μ). A person is trying to pull the body by applying a horizontal force but the body is not moving. The force by the surface on the body is F, where
MEDIUM
JEE Main
IMPORTANT
CONCEPTS OF PHYSICS [VOLUME 1]>Chapter 6 - Friction>OBJECTIVE I>Q 4
A scooter, starting from rest, moves with a constant acceleration for a time Δt1, then with a constant velocity for the next Δt2 and finally with a constant deceleration for the next ∆t3 to come to rest. A 500 N man, sitting on the scooter behind the driver, manages to stay at rest with respect to the scooter without touching any other part. The force exerted by the seat on the man is
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JEE Main
IMPORTANT
CONCEPTS OF PHYSICS [VOLUME 1]>Chapter 6 - Friction>OBJECTIVE I>Q 5

Consider the situation shown in the figure. The wall is smooth but the surfaces of A and B in contact are rough. The friction on B due to A, in equilibrium

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