A particle which is constrained to move along x - axis, is subjected to a force in the same direction which varies with the distance x of the particle from the origin as F(x)=kx + ax^(3). Here, k and a are positive constants. For x ge 0, the functional form of the potential energy U (x) of the particle is

A particle which is constrained to move along x - axis, is subjected t

1.	A particle which is constrained to move along x - axis, is subjected to a force in the same direction which varies with the distance x of the particle from the origin as F(x)=kx + ax^(3). Here, k and a are positive constants. For x ge 0, the functional form of the potential energy U (x) of the particle is
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