Hi all(adsbygoogle = window.adsbygoogle || []).push({});

I am in deperate, desperate, desperate need of some help. I have this question that I have been working on for hours and have made no progress at all.

Here is the question.

Write down the "conservation of mass" equation for dm(r)/dr, where m(r) is the mass inside radius "r". Assume that the pressure inside a star at radius r is given by

P(r) = Pc/R(R-r)

where Pc is the central pressure and R is the stars outer radius. Combine this and the equation of hydrostatic equlibrium to find an expression form(r).Hence show thatm(r) x r5/2

PLease please help,

any advice on how to solve this or the answer will be great.

Thanks All

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# Homework Help: Help! Conservation Of Mass

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