Kinematics Question 473
Question: Assertion: In circular motion, work done by centripetal force is zero. Reason: In circular motion centripetal force is perpendicular to the displacement.
Options:
A) If both assertion and reason are true and the reason is the correct explanation of the assertion.
B) If both assertion and reason are true but reason is not the correct explanation of the assertion.
C) If assertion is true but reason is false.
D) If the assertion and reason both are false.
E) If assertion is false but reason is true.
Show Answer
Answer:
Correct Answer: A
Solution:
We know that $ W=Fs\cos \theta $ in the circular motion if $ \theta =90^{o} $ then $ W=0 $
