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Which of the following are correct?
a) Algebraic sum of moments of masses about centre of mass is zero
b) For small bodies centre of mass coincides with centre of gravity
c) Position of centre of mass depends on co-ordinate system
d) Position of centre of mass is independent of mass distribution

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a and b are correct

b and c are correct

a, b and c are correct

a, b, c and d are correct

answer is A.

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Detailed Solution

Position of COM does not depend on the coordinate system. Also COM is dependent on the mass distribution . Hence 3 and 4 are wrong

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