2. For the system shown below, develop an equation for the velocity of the piston as a function of $\omega$, $\theta$, and x; then calculate the velocity of the piston if $L_1 = 1$ m, $L_2 = 2$ m, $\theta = 20^\circ$, and $\omega = -4$ rad/s. Use absolute motion analysis to solve this problem. ($v_x = \frac{L_1 \omega x \sin(\theta)}{L_1 \cos(\theta) - x}$, 2.02 m/s$\rightarrow$)