Physics

Problem

A block of mass

0.1 \text{ kg}

is held against a wall by applying a horizontal force of

5 \text{ N}

on the block. If the co-efficient of friction between the block and the wall is

0.5

, the magnitude of frictional force acting on the block is- (1)

2.5 \text{ N}

(2)

0.98 \text{ N}

(3)

4.9 \text{ N}

(4)

0.49 \text{ N}