Question

If any external force also is applied on the distributed loading on the composite body then?

(a) The net force will act at the centroid of the structure only

(b) The net load will not be formed as all the forces will be cancelled

(c) The net force will act on the base of the loading horizontally

(d) The net force will not to be considered, there would be a net force of the distribution, and rest will be the external forces

This question was addressed to me during an interview.

I'd like to ask this question from Composite Bodies in portion Centre of Gravity and Centroid of Engineering Mechanics

Answer 1

The correct answer is (d) The net force will not to be considered, there would be a net force of the distribution, and rest will be the external forces

The best I can explain: The external forces are treated differently. They are not added by the force of the distributed loading. That is the force not only acts at the centroid always. It can be shifted also. Depending on the external forces. Thus the use of centroid or centre of mass.