51�Թ�

The gravity tunnel problem is used in teaching precisely because it produces such simple harmonic motion.

For physics, cover simple harmonic motion and waves.

But after weeks in the class, helping one another with Newton’s laws, friction and simple harmonic motion, they’d started to feel as if they shared the same carrel in the library.

The amplitude of a simple harmonic motion is the range on one side or the other of the middle point of the course.

Rotational motion leads naturally to a discussion of centripetal force, and this in turn is simple harmonic motion.