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A 20-toothed gear wheel drives a 60-toothed one. If the angu...

A 20-toothed gear wheel drives a 60-toothed one. If the angular speed of the smaller wheel is 120 rev s-1, the angular speed of the larger wheel is

A.

3 rev s-1

B.

40 rev s-1

C.

360 rev s-1

D.

2400 rev s-1

Correct answer is C

speed of driverspeeder driven = no. of teeth of driverno. of teeth of driven

120V = 2060

v = 360 rev s-1