This motion may be approximated by that of the tines of a tuning fork when struck, and could be seen as a sinusoidal or SINE WAVE from the trace of a pen attached to the tine and moving against paper ...

Traditionally, the introductory view of the pendulum is to show that for small amplitudes the motion of the mass is like a simple harmonic motion (motion of a mass on a spring) with a period of ...

This motion may be approximated by that of the tines of a tuning fork when struck, and could be seen as a sinusoidal or SINE WAVE from the trace of a pen attached to the tine and moving against paper ...