all you have to do is convert it..........
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(x radians / second) x (1 revolution / 2 pi radians) x (60 seconds / minute)= (60x) / (2 pi) (revolution / minute)Multiply (radians per sec) by (60)/(2 pi) = 9.5493(rounded) to get RPM.
The RPM displayed by the tachometer on the dash refers to engine RPM, i.e. the crankshaft.
To convert speed from meters per second (m/s) to revolutions per minute (RPM), you need to know the circumference of the rotating object. Without that information, it is not possible to directly convert mach 0.8 or 272.23 m/s to RPM. RPM is a measure of rotational speed, whereas mach is a unit of relative velocity to the speed of sound.
The angular velocity of a pulley turning 1800 rpm is 60 pi radians per second.
In revolutions per minute (rpm), or radians per second.