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Two point masses of 0.3 kg and 0.7kg are...

Two point masses of 0.3 kg and 0.7kg are fixed at the ends of a rod of length 1.4 m and of negligible mass. The rod is set rotating about an axis perpendicular to its length with a uniform angular speed. The point on the rod through which the axis should pass in order that the work required for rotation of the rod is minimum, is located at a distance of

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Point masses m_1 and m_2 are placed at the opposite ends of a rigid rod of length L, and negligible mass . The position of point p on this rod through which the axis should p on this rod through which the axis should pass so that the work required to set the rod rotating with angular velocity omega_0 is minimum , is given by: .