t. 16-77. The planetary gear system is used in an automatic transmission for an automobile. By locking or releasing certain gears, it has the advantage of operating the car at different speeds. Consider the case where the ring gear R is : 0, and the sun gear S is rotating at ως 5 rad/s. Determine the angular velocity of each of the planet gears P and shaft A. held fixed, @R = = WR R ws Sy 80 mm 40 mm 40 mm Prob. 16-77 A

A follower plate B holds a pair of 26-tooth planet gears C against a 20-tooth sun gear A. Each planet gear is meshed with both the fixed sun gear and a moving ring gear with 71 teeth. If the planetary follower plate is rotating at wp = 6 rad/s, find the angular velocities of the planet and ring gears. a. Each planet gear rotates at wp = rad/s b. The ring gear rotates at WR = rad/s (round your answer to 3 significant figures)

solve only letter B draw fbd

3. For the following planetry gear train determine the following 4 Sun gear: N2 = 24 teeth, Internal gear connected to drive shaft, 42T Input to Sun gear: w2 = 100 rpm ccw Input to Planet gears: W4 = 240 rpm cw Ring gear: N5 = 52 teeth. 2 a. Determine the planet gear teeth (N4) such that the carrier ouput is w arm = 120 rpm cw. b. Determine the angular velocity of the ring gear ws (units and direction). Planet pinions, 127 Planet carrier connected to transmission Figure not to scale.