2020 · Q51
A wheel makes 360 revolutions in one minute. What is the number of radians it turns in one second?
Elementary MathematicsTrigonometry
- A4π
- B6π
- C12π
- D16π
Explanation
360 revolutions per minute = 6 revolutions per second. Each revolution is 2π radians, so the angular speed is 12π rad/s. Numerically this is about 37.7 rad/s.