Q. A body of mass 5 kg is moving in a circle of radius 1 m with an angular velocity of 2 $rad\ s^{- 1}$. The centripetal force, is
A) 10 N
B) 20 N
C) 30 N
D) 40 N
Explanation
(b) Centripetal force $= mr\omega^{2} = 5 \times 1 \times 4 = 20$N
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.