Friction - Practice Questions & MCQ
Quick Facts
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11 Questions around this concept.
Solve by difficulty
EASYDirection: In the following question, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:
Assertion: A frictional force is the component of contact force parallel to the surface.
Reason: Friction does not always oppose the motion of the body.
Direction: In the following question, a statement of Assertion (A) is followed by a statement of reason (R). Mark the correct choice as:
Assertion: Force of friction depends on the area of contact.
Reason: Larger the area of contact larger is the oppose to motion.
Meena applies the front brakes while riding on her bicycle along a flat road. The force that slows her bicycle is provided by the
(A) front tyre
(B) road
(C) rear tyre
(D) brakes
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Concepts Covered - 1
Laws of friction
- The friction of the moving object is proportional to the normal force( numerically equal to pressing force).
$f \propto N$
- The friction experienced by the object is dependent on the nature of the surface it is in contact with.
- Friction is independent of the area of contact as long as there is an area of contact(as for solid apparent area is not equal to actual area of contact).
- It acts tangentially along with the contact.
- The direction of friction is always opposite to the direction of relative motion.
- It can be also defined as the component of contact force which is parallel to the surfaces in contact.
Types of friction;-
- Static Friction
- Kinetic Friction
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