The diameter of the bicycle wheels is 0.8 m. What frequency is required to rotate the wheels at a speed of 4 π m / s?

univerkov | December 2, 2020 | education

Given: d = 0.8 m
V (speed) = 4Pi m / s
To find:
v (frequency) -?
Decision:
V = ω * r (radius)
r = d / 2 = 0.8 / 2 = 0.4 m
ω = 2 * Pi * v
V = 2 * Pi * v * r
output:
v = V / 2 * Pi * r = 4Pi (m / s) /2*Pi*0.4m = 5Hz
Answer: 5Hz

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