rpm (unit)
Physical unit | |
---|---|
Unit name | rpm (revolutions per minute) |
Unit symbol | |
Physical quantity (s) | rotational speed |
Formula symbol | |
dimension | |
system | Anglo-American system of measurement |
In SI units | |
Named after | english revolutions per minute |
Derived from | minute |
rpm ( English revolutions per minute ; "revolutions per minute") is an Anglo-American unit in mechanics for speed . In the case of a rotary axis , for example, this indicates the number of revolutions in a time period based on this time period.
The German unit of measurement for rpm is 1 / min (= 1 min −1 )
According to the SI system of units , the specification in the unit 1 / s is intended, but rarely used; according to DIN 1301, the Hertz unit is not to be used for the speed.
The special name rotation (unit symbol r, in German-speaking countries U) is usually used instead of one as a unit in the specification for rotating machines. Accordingly, the unit "revolutions per minute" (unit symbol rpm) is widely used for speed.
If you look at a point on a component rotating with the axis, it moves with the angular velocity .
- One belongs to one
It stands for the numerical value of the speed in the unit used.