What Happens to Rotational Velocity When AC Part is Dropped?

[Anisur Rahman]

TL;DR Summary

Need help in this question.

In figure AO = OB = 4m. C is the midpoint of AO. The rod rotates with a velocity of 5 rad/s about the axis PQ. What will be the rotational velocity of the remaining rod if AC part is suddenly dropped from the rod? Assume that the mass of this uniform rod is M.

 

[Lnewqban]

What do you think it will happen?
You will have less mass rotating, but not in a concentric way.

 

[Anisur Rahman]

What do you think it will happen?
You will have less mass rotating, but not in a concentric way.

To calculate the angular momentum of the remaining rod, I think to substract the angular momentum of the dropped part from primary angular momentum. But I am confused about to calculate the angular momentum of the dropped part. How can I calculate that?

 

[berkeman]

Thread closed temporarily for Moderation...

 

[berkeman]

TL;DR Summary: Need help in this question.

In figure AO = OB = 4m. C is the midpoint of AO. The rod rotates with a velocity of 5 rad/s about the axis PQ. What will be the rotational velocity of the remaining rod if AC part is suddenly dropped from the rod? Assume that the mass of this uniform rod is M.
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