Converting an angular velocity from revolutions per minute to standard units means converting to:

1. Rotational formulas assume angles measured in radians. 2. Revolutions per minute is a convenient but non-standard unit. 3. Because the value is in revolutions per minute and standard units are wanted, you convert from rpm to radians per second. 4. Degrees per second would still be non-standard, and metres per second is a linear quantity. 5. Only after that conversion do the rotational equations give correct numbers. _Source: OpenStax College Physics for AP(R) Courses 2e (CC BY 4.0), Ch 10 'Rotational Motion and Angular Momentum', sections 10.1-10.7_