Q. A block is lying static on the floor. The maximum value of static frictional force on the block is $10N$. If a horizontal force of $8\ N$ is applied to the block, what will be the frictional force on the block
A) $2\ N$
B) $18\ N$
C) $8\ N$
D) $10\ N$
Explanation
(c) [image:5_image225.png]
The limiting force of friction is
$f_{s} = 10\ N$
As $F = 8N < f_{s}$, therefore, block does not move. As static friction is a self adjusting force, therefore the frictional force on the block is 8 N
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.