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  4. A particle is placed at the origin and a force F=kx is acting on it (where k is a positive constant). IF U(.0.)=0 , the graph of U(.x.) versus x will be (where U is the potential energy function)

Q. A particle is placed at the origin and a force is acting on it (where is a positive constant). IF , the graph of versus will be (where is the potential energy function)

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