Question

There are three types of friction problems. One of them is _____________

(a) Impending motion at a single point of contact

(b) No-Impending motion at a single point of contact

(c) Impending motion at all points of contact

(d) Apparent Impending motion

The question was posed to me at a job interview.

This is a very interesting question from Problems Involving Dry Friction in division Friction of Engineering Mechanics

Answer 1

Correct option is (c) Impending motion at all points of contact

To explain I would say: There are mainly three types of friction problems. They are no-apparent impending motion, impending motion at all points of contact and impending motion at some points of contacts. Therefore the answer is impending motion at all points of contact. There is involvement of various types of calculations which is there in all of the three types.