Problem 319 | Equilibrium of Concurrent Force System Problem 319 Cords are loop around a small spacer separating two cylinders each weighing 400 lb and pass, as shown in Fig. P-319 over a frictionless pulleys to weights of 200 lb and 400 lb . Determine the angle θ and the normal pressure N between the cylinders and the smooth horizontal surface. Solution 319 Click here to expand or collapse this section $\Sigma F_H = 0$ $400 \cos \theta = 200$ $\cos \theta = 0.5$ $\theta = 60^\circ$ answer $\Sigma F_V = 0$ $N + 400 \sin \theta = 800$ $N + 400 \sin 60^\circ = 800$ $N = 453.59 \, \text{ lb}$ ← answer Tags pulley cylinder concurrent forces equilibrium static equilibrium normal force loop cord smooth pulley frictionless pulley Log in or register to post comments Book traversal links for Problem 319 | Equilibrium of Concurrent Force System Problem 318 | Equilibrium of Concurrent Force System Up Problem 322 | Equilibrium of Force System