Q. An electric fan has blades of length 30 cm measured from the axis of rotation. If the fan is rotating at 120 rpm, the acceleration of a point on the tip of the blade is
A) 1600 $ms^{- 2}$
B) 47.4 $ms^{- 2}$
C) 23.7 $ms^{- 2}$
D) 50.55 $ms^{- 2}$
Explanation
(b) Centripetal acceleration $= r4\pi^{2}v^{2}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.