Answer to Question #178682 in Mechanical Engineering for Cyrill Ray

Question

 The gate MN in Fig. X3.8.18 rotates about an axis through N. If the width perpendicular to the plane of the figure is 3 ft, what torque applied to the shaft through N is required to hold the gate closed?

Answer 1

a = 3.3 ft, b = 1.3 ft, d = 2 ft

Draw the free body diagram of the gate.

4660 ft·lb