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 (a) 0.42 m from mass of 0.3 kg (b) 0.70 m from mass of 0.7 kg (c) 0.98 m from mass of 0.3 kg (d) 0.98 m from mass of 0.7 kg
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 (a) 0.42 m from mass of 0.3 kg (b) 0.70 m from mass of 0.7 kg (c) 0.98 m from mass of 0.3 kg (d) 0.98 m from mass of 0.7 kg
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Transcribed Image Text: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
(a) 0.42 m from mass of 0.3 kg
(b) 0.70 m from mass of 0.7 kg
(c) 0.98 m from mass of 0.3 kg
(d) 0.98 m from mass of 0.7 kg
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