When does a body (system) have different cent | vedclass

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(A) The centre of mass is a point where the entire mass of the body is assumed to be concentrated,which depends only on the distribution of mass withi

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When the body is in a non-uniform gravitational field.

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(A) The centre of mass is a point where the entire mass of the body is assumed to be concentrated,which depends only on the distribution of mass within the body.The centre of gravity is a point where the total gravitational force (weight) acts on the body,which depends on the gravitational field intensity at different points of the body.If the gravitational field is uniform (constant $g$ throughout the body),the centre of gravity coincides with the centre of mass.However,if the gravitational field is non-uniform (varies across the body),the gravitational force acting on different parts of the body will be different,causing the centre of gravity to shift away from the centre of mass.Therefore,a body has different centre of gravity and centre of mass when it is in a non-uniform gravitational field.

When does a body (system) have different centre of gravity and centre of mass?

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