A wheel with a diameter of 12 inches will have an angular speed of 560.2 revs per minute.
The circumference of an 8-inch diameter wheel = d*pi = 8*pi. Each revolution will advance the wheel by one circumference, so 2000 revolutions per minute would be 2000 * 8 * pi = 1600pi feet per minute.
1 revolution = 2PI radian. 2 revolutions = 4PI radian The angular speed of the Ferris wheel is 4PI radians . Multiply by the radius. The linear speed is 100PI feet per minute.
The speeds for grinding are not measured in RPMs. They are measured by peripheral wheel speed in surface feet per minute.Ê
I have no idea why.
The revolutions per minute of a bike wheel depends on the size of the wheel, the speed you are riding, and other factors. It is generally thought it can spin at 2 revolutions per second.
Pressing on the accelerator increases engine rpm (revolutions per minute) which in turn increases wheel/tire rpm which increases vehicle speed.
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5 minutes
About 2997.279 MPH. (IF your taking a 20' RADIUS.) If you are talking of a 20' diameter. then would be feet/minute = rpm * diameter * pi 131946.891468 feet/minute
Waistband
1760 yards = 1 mile. 60 minutes = 1 hour. 36 inches = 1 yard. 50*1760 divided by 60 = 1466 yards 2 feet in one minute Circumference of wheel = pi*36 = 113.0973355 inches 113.0973355/36 = 3.141592654 yards 1466.666666/3.14192654 = 466.8048878 revolutions in one minute So the wheel makes 466 full revolutions in one minute.