It seems simple, and it appears in most introductory physics textbooks. But it's not a trivial problem to solve for the motion of ... methods to get a differential equation---but now I'm calling ...

Eventually, the motion ... equation that described the velocity of the ball on the spring. So, let's recall what we know about uniform circular motion, to see what it can tell us about simple ...

There’s some truth to the last point; this is simple harmonic motion, after all. But physics is about finding the essentials, and all of the essentials are in this short equation, which is why ...