JEE MainPhysicsRotational MotionMCQ+4 / −1
A mass M hangs on a massless rod of length l which rotates at a constant angular frequency. The mass M moves with steady speed in a circular path of constant radius. Assume that the system is in steady circular motion with constant angular velocity . The angular momentum of M about point A is LA which lies in the positive z direction and the angular momentum of M about point B is LB. The correct statement for this system is : 
- ALA is constant, both in magnitude and direction
- BLB is constant in direction with varying magnitude
- CLB is constant, both in magnitude and direction
- DLA and LB are both constant in magnitude and direction
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