Kinematics Question 801
Question: A particle is moving in a circle of radius R with constant speed v, if radius is double then it’s centripetal force to keep the same speed should be[BCECE 2005]
Options:
A) Doubled
B) Halved
C) Quadrupled
D) Unchanged
Show Answer
Answer:
Correct Answer: B
Solution:
$ \ F=\frac{mv^{2}}{r} $ . For same mass and same speed if radius is doubled then force should be halved.
