a particle of mass2.5kg moves in a cnservative force field.its potential energy curveis dhwn below.from the curve,detrmine(a)the totalmechanical energy curve particle at x=1.3m if it has a speed of 8ms-1 and (b)the minimum total energy at which the particle can escape from the force field.if Etot=150J,wherewould the particle have (i) zero velocity (ii) maximum velocity