does anyone know the formula for calculating the speed a wheel has to be travelling to cover a certain amount of rotations within a minute eg 30rpm,(adsbygoogle = window.adsbygoogle || []).push({});

if 2m diameter implies a 3.142 perimeter (x 30)

therefore do the wheels move at 94 meters p m (x 60 minutes , in time)

= 5.64 kmph or 3.5 mph? essentially small wheels to require faster speed hence gearing etc

? if yes does anyone have a simpler calculation?

Also the calculation to turn an item such as a water wheel different size for different torques on the crank shaft

The leverage required at different size to achieve a desired rpm at different levels of torque?

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# Wheel speed at tyre compared to at the centre

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