Question

Give two illustrations of rigid bodies in which the centres of mass lie in the matter of the body.

Answer 1

Explanation:

Center of mass of the body is the physical quantity at which the average  mass of the body concentrated.

Two illustrations of rigid bodies:

Aircraft:The center of mass of the aircraft lies from the 3/4th of the nose to the fuselage along the fuselage reference line of the aircraft.It is also known as center of gravity.

Circular disc :The center of mass of circular disc lies on the centre of the circular disc.

Answer 2

Answer:

• COM of solid sphere lies inside it whereas COM of uniform circular ring lies at its geometric centre where there is actually no matter.