Q. An unbanked curve has a radius of $60m.$ The maximum speed at which car can make a turn if the coefficient of static friction is 0.75, is
A) $2.1\ m/s$
B) $14\ m/s$
C) $21\ m/s$
D) $7\ m/s$
Explanation
(c) $V_{\max} = \sqrt{\mu rg} = \sqrt{0.75 \times 60 \times 9.8} = 21m/s$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.