Question

A block of mass 0.1 is held against a wall applying a horizontal force of 5N on block. If the coefficient of friction between the block and the wall is 0.5, the magnitude of the frictional force acting on the block is:
A. 9.8
B. 2.5
C. 0.98
D. 0.49

Answer 1

Correct Answer - C
`f_("max")=0.5xx5=2.5N`
`F_("req")=mg=0.98=0.98N`