Direction: A planetary gear train has four gears and one carrier. Angular velocities of the gears are ω1, ω2, ω3, and ω4, respectively. The carrier rotates with angular velocity ω5 
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For ω1 = 60 rpm clockwise (cw) when viewed from the left, what is the angular velocity of the carrier and its direction. so that Gear 4 rotates in counter clockwise (ccw) direction at twice the angular velocity of Gear 1 when viewed from the left?
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- 130 rpm, cw
- 223 rpm, ccw
- 256 rpm, cw
- 156 rpm, ccw
Correct Option: D
156 rpm, ccw
