(a) $mg = 2kx_{A}$ $mg = kx_{B}$ $\therefore$ $\frac{x_{A}}{x_{B}} = \frac{1}{2}$ $\therefore$ $W = Fx$ $\therefore$ $\frac{W_{A}}{W_{B}} = \frac{Fx_{A}}{Fx_{B}} = \frac{1}{2}$
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.