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Question

What is the position of centre of gravity of a rectangular lamina?

A
At the mid point of longer side
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B
At the mid point of shorter side
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C
At the point of intersection of its diagonals
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D
At one of the corners
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Solution

The correct option is C At the point of intersection of its diagonalsCentre of gravity means a point from which the weight of a body or system may be considered to act. In uniform gravity it is the same as the centre of mass. Hence for a regular shaped bodies it will have at the centre of that body. Hence for a rectangle it is nothing but at the point of intersection of diagonals.

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