Question: In the planetary gear system shown, the radius of the central gear A is a = 20 mm, the radius of the planetary gear is

In the planetary gear system shown, the radius of the central gear A is a = 20 mm, the radius of the planetary gear is b, and the radius of the outer gear E is (a + 2b). A clockwise couple of magnitude MA = 20 N ⋅ m is applied to the central gear A, and a counterclockwise couple of magnitude MS = 100 N ⋅ m is applied to the spider BCD. If the system is to be in equilibrium, determine

(a) The required radius b of the planetary gears,

(b) The couple ME that must be applied to the outer gear E.

SRA

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FBD Gear A Ra FBD Gear C F 20Nm Ax Rb U Cx 4 E4 a By symmetry F F F F EM 0 3aF20 Nm 0 20 F Nm ... View full answer

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