JEE Main & Advanced
Sample Paper
JEE Main Sample Paper-32
question_answer
A block of mass 0.1 kg is held against a wall applying a horizontal force of 5N on the block. If the coefficient of friction between the block and the wall is 0.50, the magnitude of frictional force acting on the block is:
A)2.5 N
B) 4.9N
C)0.49 N
D) 0.98 N
Correct Answer:
D
Solution :
\[N=5(N)\] \[{{F}_{\max }}=0.5\times 5=2.5\,N\] Vertical equilibrium of block is maintained if, \[f=mg=0.98(N)<{{(f)}_{\max }}\]