Explain how the centre of gravity of an annular ring
is determined.
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That is center of gravity of a body is the point about which sum of the moments of all the gravitational forces is zero. This means the CG of a body coincides with its CM. The CG of a ring is the center of circle of which it is made. Moment of mass points of a ring about this point is zero.
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That is center of gravity of a body is the point about which sum of the moments of all the gravitational forces is zero. ... Thus CG of a body coincides with its CM. The CG of a ring is the center of circle of which it is made. Moment of mass points of a ring about this point is zero
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