Physics
High School (11–12)
Waves & Sound › Oscillations and Simple Harmonic MotionMechanics › Work, Energy and PowerChapter 13Oscillations
A swing, a guitar string, a mass on a spring and the balance wheel of a watch all go back and forth, again and again. Many of these motions follow one simple rule: the pull back is larger when the body is further away. That rule gives simple harmonic motion. We describe it with a reference circle, find its speed, acceleration and energy, and use it for springs and pendulums. Then we see how friction makes an oscillation die away, and how a small push at the right moment builds a large one. Python draws the motion and finds the period for us.
Part of Physics · High School (11–12) (chapter 13)
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Periodic Motion and Simple Harmonic Motion
Periodic and oscillatory motion, with its period and frequency. The equation of simple harmonic motion, its amplitude and its phase. Its link with uniform circular motion, and the velocity and acceleration of the body.
Force Law, Springs and Energy in SHM
The restoring force that grows with the displacement, and the angular frequency it gives. A mass on a horizontal or a vertical spring, and springs in series and in parallel. The kinetic, potential and total energy of an oscillator.