Question

If solving the question in 3D calculations is difficult, then use the 2D system and then equate the ratio of the product of the centroid of the section to its mass to the total mass of the body to the centroid.

(a) True

(b) False

The question was asked at a job interview.

This intriguing question originated from Centroid of a Body in chapter Centre of Gravity and Centroid of Engineering Mechanics

Answer 1

Right choice is (b) False

For explanation: The answer is obviously no. Still, if we are having any difficulty in making the vector components, then we can go in 2D. As if the particle is in equilibrium, the net force will be zero. No matter where you see first. Net force is zero. But the statement here is not correct about the centroid.