Question

In the example of a perfectly rigid body, as the points are of same material then can we take another thing common in the points as mass?

Answer 1

A perfectly rigid body is defined as a body on which the distance between two points never changes whatever be the force applied on it. Or you may say the body which does not deform under the influence of forces is known as a perfectly rigid body.

yes,We can take another thing in the common points of mass such that the distance between two points on body never changes whatever be the force applied on it.