Point masses m 1 and m 2 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 ω 0 is minimum, is given by : 
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
C
K.E. = 
I ω 2
I is min. about the centre of mass
So. (m 1 ) (x) = (m 2 ) (L–x)
x = 
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