Open study

is now brainly

With Brainly you can:

  • Get homework help from millions of students and moderators
  • Learn how to solve problems with step-by-step explanations
  • Share your knowledge and earn points by helping other students
  • Learn anywhere, anytime with the Brainly app!

A community for students.

What does it mean to say that angular momentum is conserved?

MIT 8.01 Physics I Classical Mechanics, Fall 1999
See more answers at brainly.com
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

Join Brainly to access

this expert answer

SEE EXPERT ANSWER

To see the expert answer you'll need to create a free account at Brainly

It means, that unless you apply an external net torque to a system, its angular momentum will not change in time.
^^ If the moment of inertia is constant. This statement is incorrect if : |dw:1360225020292:dw|
@siddhantsharan I do not understand your point. Can you please elaborate?

Not the answer you are looking for?

Search for more explanations.

Ask your own question

Other answers:

Yeah. What I was saying is basically a little thing that we always ignore, however it is still a possibility. Torque is defined as rate of change of angular momentum. Which is \[\tau = d(I \omega)/dt\] This is actually, \[I(d \omega /dt) + (dI/dt) \omega \] Using the product rule for differenciation. In your statement you have assumed that \[dI/dt = 0\] That is agreed, usually the case, However a small case two arises when the rate of change of angular mommentum is zero, i.e. Angular momentum is constant BUT there is still a net torque on the system. That is when, The system is a non-relavistic sstem. Otherwise, The comment that I mentioned above may also be the case. I may chenge with time when mass is being perhaps ejected or it's distance from the axis of rotation is bieng chenged, etc.
Check the last line under "Proof for equivalance relations" here http://en.wikipedia.org/wiki/Torque @Vincent-Lyon.Fr
Re-read my statement, I never assume that dI/dt BUT I assumed that the system was closed, as is usually the case when you quote "conservation of angular momentum". Of course, if the system is open and ejects matter, the angular momentum of the OPEN system will change without net torque applied. The initial question was : "What does it mean to say that angular momentum is conserved?" It implies the explanation of a general relation, not a particular one, where this would be the case with lots of ad-hoc conditions to meet the criteria.
Right you are. My bad. That is correct. I misunderstood. :)

Not the answer you are looking for?

Search for more explanations.

Ask your own question