A massless rod S having length `2l` has equal point masses attached to its two ends as shown in figure. The rod is rotating about an axis passing through its centre and making angle `alpha` with the axis. The magnitude of change of momentum of rod i.e., `|(dL)/(dt)|` equals

Options

A. `2 m I^(3) omega^(2) sin theta. Cos theta`
B. `mI^(2) omega^(2) sin 2 theta`
C. `mI^(2) sin 2 theta`
D. `m^(1//2)I^(1//2) omega sin theta. Cos theta`

Answer

B