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Two mating spur gears have 40 and 120 teeth respectively. The pinion rotates at 1200 rpm and transmits a torque of 20 Nm. The torque transmitted by the gear is

Two mating spur gears have 40 and 120 teeth respectively. The pinion rotates at 1200 rpm and transmits a torque of 20 Nm. The torque transmitted by the gear is Correct Answer 60Nm

We know, N1/N2 = T1/T2 N1 = speed of pinion N2 = speed of gear wheel T1 = number of teeth of gear T2 = number of teeth of pinion 1200/N2 = 120/40 N2 = 400 r.p.m. Since power transmitted by both gear will be equal T1ω1= T2 x ω2 torque transmitted by gear, = 60 N-m.

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