So for a point mass in an enclosed shell, the net force of gravity is zero (similar to electricity in a Faraday cage I presume). However, what happens when that point mass is placed in side the ring of mass m and uniform density. Say the outer shell has radius r and inner shell has radius x, so the region r-x is a massed shell/ring. How would you find the net force of gravity?(adsbygoogle = window.adsbygoogle || []).push({});

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# Understanding Newtonian Gravitation

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