Question

The body is sometimes acted by two or three force members and we need to find the moment of inertia about the inclined axis for the same. The difference between the two and the three force members is:

(a) The former is collinear and the latter is parallel

(b) The former is parallel and the latter is perpendicular

(c) The former is perpendicular and the latter is collinear

(d) The former is acting on two points in the body while the latter is on three points

This question was addressed to me during an interview.

Origin of the question is Moments of Inertia for an Area About Inclined Axis in portion Moments of Inertia of Engineering Mechanics

Answer 1

Right answer is (d) The former is acting on two points in the body while the latter is on three points

The best explanation: The definition of the two force member only defines that the forces are being acted on the two points on the body. So does is the definition of the three forces members. The points of action of the three forces are three.