Question

Air also resist the body in the motion. The maximum value of the frictional force is called _________

(a) Limiting Friction

(b) Non-Limiting Friction

(c) Limiting Action Friction

(d) Non-Limiting Action Friction

This question was posed to me in an interview.

This intriguing question comes from Potential Energy topic in chapter Principle of Virtual Work of Engineering Mechanics

Answer 1

Correct answer is (a) Limiting Friction

To explain I would say: The friction is the phenomena that define that there is a resistance which is present there between the two surfaces. The two surfaces are in contact and the friction applies at that surface only, resisting the motion of the surface. Thus the maximum values is called as limiting friction.