Home
Class 11
PHYSICS
Assertion : In circular motion work done...

Assertion : In circular motion work done by all the forces acting on the body is zero.
Reason : Centripetal force and velocity are mutually perpendicular.

A

If both Assertion and Reason are true and the Reason is correct explanation of the Assertion.

B

If both Assertion and Reason are true and the Reason is not the correct explanation of the Assertion.

C

If Assertion is true, but the Reason is false

D

If Assertion is false but the Reason is true.

Text Solution

Verified by Experts

The correct Answer is:
D
In non-uniform circular motion (when speed constant) work done by all the forces is zero.
Promotional Banner

Similar Questions

Explore conceptually related problems

A body is undergoing non-uniform circular motion. Work done by radial force on the body is

In case of circular motion a body, if tangential force also acts on the body in addition to centripetal force, then work done:

In case of circular motion a body , if tangential force also acts on the body in addition to centripetal force , then work done

Assertion : In circular motion, the centripetal and centrifugal force acting in opposite direction balance each other. Reason : Centripetal and centrifugal forces don’t act at the same time.

Centripetal force is provided by the real forces acting on the body in motion.

Assertion : The work done by the spring force in a cyclic process is zero. Reason : Spring force is a conservative force.

When reasultant of all forces acting on a body is zero, the forces are called

When a body moves in a circular path, no work is done by the force since,

Why is the work done by a centripetal force equal to zero?

Statement - 1: A particle moves along a straight line with constant velocity. Now a constant non-zero force is applied on the particle in direction opposite to its initial velocity. After the force is applied, the net work done by this force may be zero in certain time intervals. Statement - 2 : The work done by a force acting on a particle is zero in any time interval if the force is always perpendicular to velocity of the particle.