Question

In friction, the relation between coefficient of kinetic friction ${\mu }_k$ and coefficient of static friction ${\mu }_s$ is

• A. ${\mu }_k\ge {\mu }_s$
• B. ${\mu }_k={\mu }_s$
• C. ${\mu }_k\le {\mu }_s$
• D. None of these

Answer 1

Answer: (C)

The coefficient of kinetic friction can't more than coefficient of static friction. Therefore, ${\mu }_k\le {\mu }_s$