申論題

2. The mechanism in Figure 2 consists of identical meshed gears A and B and arms are fixed to the gears. The spring attached to the ends of the arms has an unstarched length of D = 12 cm and a stiffness k = 280 N/m. A torque M is applied to gear A to yield an angular displacement θ through each arm (a = 22 cm) rotates. The gears can be viewed as circles with radius R = D/2. Each gear is pinned to fixed supports at their centers.

(2) (15 pts) determine the angular displacement θ in degrees for M = 20 N●m.