Question

# All the particles of a body are situated at a distance $$R$$ from the origin. The distance of centre of mass of the body from the origin is

A
=R
B
R
C
>R
D
R

Solution

## The correct option is A $$=R$$In the given case it is given that all particles are at a distance $$R$$ from the origin but about the distance between the particles it does not explain. If all particles together at $$R$$ then the centre of mass will be at $$R$$. If all particles are in a circle separately and at a distance $$R$$ from the origin, then the centre of mass will lie on the origin. Thus, the centre of mass of the body from the origin is $$R$$.Physics

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