Friction is a noncontact force
so given statement is false.
(a) Define frictional force (or friction)
(b) Explain why frictional force is said to be a contact force.
(c) Explain why magnetic force is said to be a non-contact force.
Two blocks A and B with masses m and 2m are held against a vertical wall. The horizontal force applied to both the blocks is 25N. Assuming coefficient of friction is same in both cases, the correct relation is