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If large number of particles are distrib...

If large number of particles are distributed on XY plane and their centre of mass is at origin of coordinates, then

A

A. Sum of moments of all the particles w.r.t the origin is zero

B

B. Sum of moments of masses of all particles about x-axis is zero

C

C. Sum of moments of masses of all particles about y-axis is zero

D

D. All of these

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