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The gravitational potential at a place varies inversely with $x^{2}\left(\right.$ i.e., $\left.V=k / x^{2}\right)$, the gravitational field at that place is
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$2 k / x^{3}$
Gravitational intensity,
$I=-\frac{d v}{d x}=-\frac{d}{d x}\left(\frac{k}{x^{2}}\right)=\frac{2 k}{x^{3}}$
$I=-\frac{d v}{d x}=-\frac{d}{d x}\left(\frac{k}{x^{2}}\right)=\frac{2 k}{x^{3}}$
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