What does the symbol "RPM" stand for in equations?

The symbol "RPM" in equations stands for "Revolutions Per Minute." This term is widely used in various fields, including mechanics and engineering, to quantify the rotational speed of an object. It indicates how many complete turns (or revolutions) an object makes around a fixed axis in one minute. This measurement is particularly useful for understanding the speed of engines, motors, and machinery where rotational movement is a key factor in performance and operation.

While "Rotations Per Minute" could seem a plausible option since "revolutions" and "rotations" are often used interchangeably in casual contexts, the more technically accurate term recognized in most standard practices is "Revolutions Per Minute." Thus, while both terms refer to the same concept, using the precise terminology is crucial in formal education and industry settings.