A massless rod 
having length 
has equal point masses attached to its two ends as shown in figure. The rod is rotating about an axis passing through its center and making an angle 
with the axis. The magnitude of change of momentum of rod i.e. 
equals
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
The radius of the circle followed by the masses,
As, angular momentum, 
On differentiating both sides, we get
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