# Gravitational potential from thin rod

A thin uniform rod of length $$L$$ and mass $$M$$ is placed along the $$x$$-axis. One end of the rod is placed at the origin and the other end at the point $$(L,0).$$ Find the gravitational potential at the point $$P( a, 0 )$$ with $$a > L.$$

We take the gravitational potential to be zero at $$x = \text{infinity}.$$

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