Deepu S.
asked • 01/08/19A car is moving with speed of 22decameter per second. Find the diameter of the wheel if it performs 700 revolutions per second
A car is moving with speed of 22decameter per second. Find the diameter of the wheel if it performs 700 revolutions per second
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1 Expert Answer
Larry C. answered • 01/09/19
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Each revolution of the wheel travels the circumference C, so 700C = 22 dam = 220 m = 22000 cm
C = 22000/700 = 220/7 = 2πr = πd Since π is roughly 22/7, the wheel diameter is roughly 10 cm (which are some pretty small wheels)
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William C.
v = 22Dm/s = 220m/s f = 700 rev/s (This means that it makes 700 full circular motions in 1 second, so it goes 700*2*pi in 1 second) d? SO: f = w/(2*pi) w = 2*pi*f = 4,398.22972 rad/s Knowing that w=Δθ/Δt, v = s/t and Δθ = Δs/r we get: v = rw v = rw r = v/w = 0.05m so d=0.10m The results are a bit weird, I'm not sure if I got that wrong but I tried.01/08/19