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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.

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5mo ago
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11y ago

It would depend on the size of the circular item you are rotating. Divide the circumference of the item ( in meters) into 272.23, and then multiply the answer by 60 seconds, to get rpm.

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Q: How fast is mach 0.8 or 272.23 meters per second in RPM?
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