The gravitational field in x direction due to some mass distribution is E=kx3, where k is a constant. Assuming the gravitational potential to be zero at infinity, then its value at a distance x will be
A
kx
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B
k2x
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C
kx2
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D
k2x2
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Solution
The correct option is Dk2x2 Gravitational potential energy is given by the relation, V=−∫E.dx V=−∫(kx3).dx V=k2x2