Question

The correct sentences among the following are ( )

a) Normal force doesn’t affect the frictional force.

b) Area of contact doesn’t affect the frictional force.

c) Normal force affects the frictional force.

d) Area of contact affects the frictional force.

A) a and d

B) a and b

C) b and c

D) c and d​

Answer 1

Answer:

C) b and c are correct.

Explanation:

Area doesnt affect the frictional force and normal force affects the frictional force as its formula is f = mass × acceleration.