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Virial theorem 
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#1
Dec2612, 05:16 AM

P: 272

Hello,
I am reading Virial theorem from Wikipedia. It states in astrophysics, virial relations are: 3/5 GM/R=3/2..... I want to know how this 3/5 and 3/2 value comes from? If somebody can explain the step by step deduction of the Virial theorem in Astrophysics...... Thanks,  Shounak 


#2
Dec2612, 03:08 PM

Emeritus
Sci Advisor
PF Gold
P: 5,196

Why not look it up yourself? The book Galaxy Formation by Malcom S. Longair has a derivation in section 3.5.1 (page 63). Actually, you can even read this section as part of the Google Books preview:
http://books.google.ca/books?id=ewJ...page&q&f=false I also seem to recall that Caroll & Ostlie (the huge orange textbook that many undergrads majoring in astro use) has a section on this as well. 


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