Question:
Consider the situation shown in figure (8-E8). Initially the spring is unstretched when the system is released from rest. Assuming no friction in the pulley, find the maximum elongation of the spring.
Solution:
Solution 45
From figure
$\operatorname{mgx}=\frac{2}{2} \mathrm{x}^{2}$
$\mathrm{X}=\frac{2 m g}{R}$