Angular Momentum Problem formula

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SUMMARY

The discussion centers on solving a problem related to the conservation of angular momentum, specifically focusing on the change in angular momentum. A participant initially misunderstands the problem's requirements but later clarifies that the correct approach involves using the formula for the change in angular momentum. The formula discussed is the "Sum of all moments = change in angular momentum," which incorporates cross products for accurate calculations. Ultimately, the participant successfully solves the problem after applying the correct formula.

PREREQUISITES
  • Understanding of angular momentum concepts
  • Familiarity with the formula for change in angular momentum
  • Knowledge of cross products in vector mathematics
  • Basic problem-solving skills in physics
NEXT STEPS
  • Study the derivation and applications of the change in angular momentum formula
  • Learn how to calculate cross products in vector mathematics
  • Explore real-world examples of angular momentum conservation
  • Practice solving physics problems involving angular momentum
USEFUL FOR

Students of physics, educators teaching mechanics, and anyone interested in mastering angular momentum concepts and problem-solving techniques.

blue-steel
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Ive been trying to figure this problem for a while and I am stumped, If anyone has any ideas
Id really appreciate it - The problem deals with conservation of angular momentum
and the answer is provided but I don't know how to get there

please see the attached image of the problem>>

Thanks :approve:
 

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Hi blue-steel,

blue-steel said:
Ive been trying to figure this problem for a while and I am stumped, If anyone has any ideas
Id really appreciate it - The problem deals with conservation of angular momentum

I don't think that is right; this problem deals not with the conservation of angular momentum, but with the change in angular momentum. What formula gives you the change in angular momentum of a system?

Once you have that formula, you can almost just plug in the numbers to get your answer. What do you get?
 
Hi alphaphysicist

I tried the Sum of all moments = change in angular momentum formula, it took me a while to figure out how to work with the cross products but I got the answer in the end, thanks :wink:
 

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