A particle of mass 10⁻² kg is moving along the positive X-axis under the influence of a force F(x) = -k / 2x² where k = 10⁻² Nm². At time t = 0, it is at x = 1.0 m and its velocity
v = 0. (1998, 8M)
Find its velocity when it reaches x = 0.5 m.