Which of the following quantities is zero, when a uniform object is being supported at its center of gravity?

Mass

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Weight

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Force

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Moment

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Solution

The correct option is D Moment
When a uniform object is being supported at its center of gravity, the total weight acts at this point. Hence $C G =$ weight due to the presence of weight mass and force of gravity are non-zero. But a moment of force at this point is zero as the object does not turn.

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