On a particle placed at origin, a variable force F = - ax (where a is a positive constant) is applied. If U(0) = 0, the graph between potential energy of particle U(x) and x is best represented by A. B. C. D.
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A force $F=k\left(x-x_{0}\right)$ acts on a particle (where $k$ is a negative constant). If potential energy $(U)$ is taken to be zero at equilibrium position, graph of $U$ versus $x$ will be a. b. c. d.
Work, Energy, Power and Circular Motion
Section B
The potential energy of a particle varies with distance $\mathrm{x}$ as shown in the graph. The force acting on the particle is zero at (A) $C$ (B) $\mathrm{B}$ (C) $\mathrm{B}$ and $\mathrm{C}$ (D) $\mathrm{A}$ and $\mathrm{D}$
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