Q. A 500 kg car takes a round of radius 50 m with a velocity of $36\ {kmh}^{- 1}$. The centripetal force is
A) 250 N
B) 750 N
C) 1000 N
D) 1200 N
Explanation
(c) $Given,\ m = 500\ kg,$
$v = 36\ {kmh}^{- 1} = 36 \times \frac{5}{18} = 10{\ \ ms}^{- 1}\ and\ r = 50\ m$
$Centripetal\ force\ F = \frac{{mv}^{2}}{r}$
$Hence,\ \ \ F = \frac{500 \times {(10)}^{2}}{50} = 1000\ N$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.