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Unformatted text preview: particle as long as screening is relatively weak, i.e., for r < a . a) Expand the Yukawa potential to Frst order in r/a . b) Calculate the orbits r ( ) of this approximated potential. [Hint: You do not have to redo calculations that we already did in class.] c) Describe qualitatively how the orbit changes compared to the unscreened case (i.e., a = ). 22. Double stars 8 points In this problem we want to look at the motion of double stars. We assume that each double star system rotates in a circular orbit around its respective center of mass. We know the distance between the double stars and their masses. Calculate their period of revolution in years if a) both stars have the same mass as the sun and their distance is 4 light years. b) one star has the same mass as the sun while the other is three times as massive and their separation is 6 light years. 1...
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This note was uploaded on 07/17/2008 for the course PHYS 664 taught by Professor Bundschuh during the Fall '04 term at Ohio State.
 Fall '04
 BUNDSCHUH
 mechanics

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