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leonne
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Homework Statement
For a finite isothermal sphere with a radius R and circular velocity v (remember,
the rotation curve is constant), we derived the total mass and potential energy as
M =v2R/G
U = -GM2/R
Express the potential energy U in terms of M and v. Use the virial theorem to
fi nd the kinetic energy K and total energy E (again in terms of M and v).
Homework Equations
The Attempt at a Solution
Kind of confused about the first part to find potential in terms of m and v.
Would I just sub total mass equation into potential? I get U=-v4R/G
Is this right? Hmm seems like what i did is wrong. Is it saying that the potential energy can only have M and V?