The discussion revolves around the relationship between angular speed and moment of inertia, particularly in the context of a skater's motion. Participants explore how changes in a skater's body position affect their spinning speed and inertia.
The discussion is active, with participants sharing insights and seeking further guidance. Some have identified angular momentum as a critical factor, while others express uncertainty about the problem's origins and requirements. There is a mix of attempts to clarify concepts and explore potential solutions.
Participants note a lack of specific information from their teacher and rely on class notes and external resources to guide their understanding. There is mention of needing to calculate angular momentum and its implications for solving the problem.
Welcome to the PF.Ys VL said:Homework Statement
Homework Equations
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The Attempt at a Solution
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I've been searching for the relation between the spinning speed and inertia in equation form. I do know that since the skater inertia is smaller the spinning speed is faster but that about it. Any hint would be helpful. One more thing, is angular velocity and angular speed the same thing?
Do your notes have anything on angular momentum? If not, try g**gling it.Ys VL said:
Looks right - but you should always include the units in the answer, or better still at every step in the calculation.Ys VL said:I'm back,
I looked up angular momentum. From what I can tell if I calculate L (angular momentum) I should have no problem solving this since L is suppose to be constant and the tangential velocity is given for it's final and initial. I tried it and I think I finally got it. If this is right thanks haruspex, if not... what else do you think I should look up?
Did I do it correctly?