Most of the published video tutorials that you could learn from.

### Physics in LEGO Mindstorms: Energy Accumulation and Conservation. Part 3 - angular velocity

We got the speed of rotations of the motor in Radians per second. Let's calculate the value for the speed of the whole system. We calculate that the wheels are rotating with 375 radians per second. Which is impressive and quite fast for this system. From this speed, knowing the inertia mass we can calculate how much energy is the system accumulating.

**#116**- 22 Nov 2015