Physics
Grade-10
Easy
Question
Choose the correct statement:
Assertion: In a circular motion, the centripetal and centrifugal forces acting in opposite directions balance each other.
Reason: Centripetal and centrifugal forces don’t act at the same time.
- The assertion is wrong, but the reason is correct.
- Both assertion and reason are correct, and the reason is the correct explanation of the assertion.
- The assertion and reason are both wrong.
- The assertion is correct, but the reason is wrong.
Hint:
Centripetal and centrifugal force are an action-reaction pair of forces acting on a body in circular motion.
The correct answer is: The assertion is correct, but the reason is wrong.
While moving along a circle, the body has a constant tendency to regain its natural straight line path.This tendency gives rise to a force called centrifugal force. The centrifugal force does not act on the body in motion, the only force acting on the body in motion is centripetal force. The centrifugal force acts on the source of centripetal force to displace it radially outward from centre of the path. Centripetal force and centrifugal force can't cancel each other because they both are same force depending upon the frame of reference. So, both Assertion and Reason are incorrect.
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