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Point masses mi and m2 are placed at the opposite ends of a rigid of length L and negligible mass. The rod is to be set rotating about an axis perpendicular to it. The position of point P on this rod through which the axis should pass so that the work required to set the rod rotating with angular velocity ao is minimum, is given by [AIPMT 2015] mi m2 (L-x) (a) x=mL (b) L x= mi (d) x- ML m t m2 mi + m2
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