Homework for Friday, Dec 11 .  (due on Friday).
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how about problems:   8-3,  8-10,  8-26
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8-35 is a challenging and optional problem that some of you may wish to try...
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In addition, please find the normal modes and frequencies for the symmetric triangle
oscillator (described in class on Dec 4).
If you do a really nice job on this problem please give me (Zack) a copy (in addition to the one
you hand in with your HW).  A clear presentation with discussion of key aspects is appreciated.
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Also, for either the potential U=kr^2  or U=kr^7, 
determine the shapes of orbits that are nearly circular by looking at the frequency
of small oscillations away from a circ orbit...(and its relation to the circ. orbit frequency).
Why are these cases special.  Are they similar to -k/r=U ?
If you do a really nice job on this problem please give me (Zack) a copy (in addition to the one
you hand in with your HW). Draw nice pictures...