### Home > PC > Chapter 4 > Lesson 4.1.1 > Problem4-9

4-9.

A wheel is spinning at $500$ revolutions per minute. Remember $1$ revolution $= 2\pi$ radians. How many radians per second is that? Give the exact value.

1. Find out how many radians per minute first.
2. Divide by $60$ to find the radians per second.