engineering recuitment NMDC Junior Officer (Trainee) Mock Test 2024 Engineering Mechanics Equilibrium and Friction Friction
Which of the following statements is NOT correct?
1
The force of friction is not depending upon the roughness of the surfaces.
2
The magnitude of the force of friction is exactly equal to the force, which tends to move the body.
3
The force of friction is independent of the area of contact between the two surfaces.
4
The force of friction always acts in a direction, opposite to that in which the body tends to move, if the force of friction would have been absent.