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Re: [Phys-L] spinning skater


On 2013, May 12, , at 14:11, curtis osterhoudt <flutzpah@yahoo.com> wrote:

Many students draw parallels with the figure skater, not having realized that the figure-skater's arms have to pull at *an angle* to a radial vector in order to be drawn in, and therefore exert a torque on the skater's body, too.

I presume work is "done" doing this. What is the connection between conservation of L and E in the skater prob.?

bc last "dealt" w/ mechanics in '63 (Goldstein).