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    Using Newtonian field equation to find the gravity inside a sphere

    should be a G*2*pi in the front of one of those integrals
  2. L

    Using Newtonian field equation to find the gravity inside a sphere

    Homework Statement work out g field at a distance r=R/2 from the centre of a spherically symmetric body of radius R. Homework Equations \nabla^{2}\psi=4\pi G \rho \psi=G\int_{V'}\rho\frac{1}{|\vec{r}-\vec{r^{'}}|}d^{3}\vec{r^{'}} -\int_{V}\nabla\cdot g dV = \int_{V}\rho dV...
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