Two pulleys are connected by a belt. The sum of the diameters of the pulleys is 92.6 cm and while one makes 50 rev/min the other make 200 rev/min. What will be the diameter of the pulleys?
a) 18.53 cm, 74.07 cm
b) 19.65 cm, 64.89 cm
c) 20.01 cm, 78.09 cm
d) 17.69 cm, 69.90 cm
Answer: a
Explanation: D1 + D2 = 92.6 cm
D1N1 = D2N2
50(92.6 – D2) = D2 * 200
D2 = 18.53 cm
D1 = 74.07 cm
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