all the particles ar situated at a distance R from the origin .The distance of centre of mass of the body will be

Question

Arun · Answer

Perhaps the easiest way is to consider all the particles to be situated on a circular ring of radius R centered on the origin
from symmetry the CoM cannot be outside the ring.
for i particle, the CoM will be on the ring ie: = R
for ii or more particles it will be
......
for infinite particles it will be at the origin O ie: = 0

hence answer is

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all the particles ar situated at a distance R from the origin .The distance of centre of mass of the body will be

all the particles ar situated at a distance R from the origin .The distance of centre of mass of the body will be

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