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