Question
Question: A uniform rod AB of length l is free to rotate about a horizontal axis passing through A. The rod is...
A uniform rod AB of length l is free to rotate about a horizontal axis passing through A. The rod is released from rest from horizontal position. If the rod gets broken at mid-point when it becomes vertical then just after breaking of rod
A
Angular velocity of upper part starts to decrease while that of lower part remains constant
B
Angular velocity of upper part starts to decrease which that of lower part starts to increase
C
Angular velocity of both the parts is identical.
D
Angular velocity of lower parts becomes zero
Answer
Angular velocity of upper part starts to decrease while that of lower part remains constant
Explanation
Solution
Angular momentum is conserned.