What Happens to Rotational Velocity When AC Part is Dropped?

In summary, when an AC part is dropped from a system, its rotational velocity may decrease due to the loss of mass and potential changes in the distribution of remaining mass. This can lead to a reduction in rotational inertia, which affects the overall dynamics of the system, potentially altering the speed and stability of rotation.
  • #1
Anisur Rahman
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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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  • #2
What do you think it will happen?
You will have less mass rotating, but not in a concentric way.
 
  • #3
Lnewqban said:
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?
 
  • #4
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  • #5
Anisur Rahman said:
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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