Categories > rotational-motion > moment of inertia > Two point masses of 0.3 kg and 0.7 kg 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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Question: Two point masses of 0.3 kg and 0.7 kg 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


1) 0.4 m from mass of 0.3 kg
2) 0.98 from mass of 0.3 kg
3) 0.70 m from mass of 0.7 kg
4) 0.98 m from mass of 0.7 kg
Solution: Explanation: No Explanation
moment of inertia

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