Question

3.
A block of 1 kg is stopped against a wall by applying a force
F perpendicular to the wall. If u =0.2 then minimum value
of F will be
(a) 980 N
(b) 49 N
(c) 98 N
(d) 490 N

Answer 1

The normal reaction of the wall on the block is equal to the force applied, which is F.

Coefficient of friction is µ.

We know, frictional force = coefficient of friction × normal reaction = µF

Answer is 49N

IF CORRECT THEN MARK AS BRAINLIEST