Q. A force of $98\ N$ is required to just start moving a body of mass $100\ kg$ over ice. The coefficient of static friction is
A) $0.6$
B) $0.4$
C) $0.2$
D) $0.1$
Explanation
(d) $\mu = \frac{F}{R} = \frac{F}{mg} = \frac{98}{100 \times 9.8} = \frac{1}{10} = 0.1$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.