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: Option C
Explanation
(frac{text {speed of driver}}{text {speeder driven}}) = (frac{text {no. of teeth of driver}}{text {no. of teeth of driven}})
(frac{120}{V}) = (frac{20}{60})
v = 360 rev s-1