The potential energy function for a particle executing linear SHM is given by where 'k' is the force constant of the oscillator. For k = 0.5Nm–1, the graph of v(x) versus 'x' is shownn in figure. A particel of total energy 'E' turns back when it reaches x = ±xm . If V and k indicate the potential energy and kinetic energy, respectively of the particle at x = +xm, then which of the following is correct?