Question

choose the correct statement among the following

(1) the force of friction will increase if the two surfaces in contact.
(2) friction force acts only on one of the two surfaces in contact.
(3) a rough surface has a small number irregularities, so the of friction is greater.
(4) a smooth regular surface has large number of irregularities l, so the force of friction is less.​

Answer 1

Answer:

1) The force of friction will increase if the two surfaces in contact.

Explanation:

When two surfaces are in contact then their irregularities will bind with a lot of force and hence the interlocking will be much more stronger and hence it will increase the friction.

Answer 2

Answer:

Explanation:

1