Question: A spehrical planet of Radius R has a density p which depends on the distance r from its centre according to the formula(adsbygoogle = window.adsbygoogle || []).push({});

[tex]p = \frac{p_0}{1 + (r/R)^2} [/tex]

where [tex] p_0 [/tex] is a constant. By dividing the planet up into spherical shells of a small thicknessdr, find the mass of the planet.

Ok so im pretty confused on what im to do here. Do i differentiate with respect to r?

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# Homework Help: Confusing Question

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