Rotational Motion Question 216
Question: A horizontal turn table in the form of a disc of radius carries a gun at and rotates with angular velocity about a vertical axis passing through the centre . The increase in angular velocity of the system if the gun fires a bullet of mass with a tangential velocity with respect to the gun is (moment of inertia of gun + table about 0 is )
Options:
A)
B)
C)
D)
Show Answer
Answer:
Correct Answer: A
Solution:
[a] Given that
Initial angular momentum of system about centre
Final angular momentum
Equations (i) and (ii);
we get