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.
3 lessons, about 1 h 30 min3 simulations12 problems6 practice questionsPython in every lesson
Created by StemPy LabA periodic motion repeats itself after a fixed time, the period . The frequency is the number of repeats each second, in hertz. An oscillation is a periodic motion to and fro about a mean position. Every oscillation is periodic, but not every periodic motion is an oscillation.
Simple harmonic motion is the oscillation . is the amplitude, is the phase, is the phase constant and is the angular frequency. It is the projection, on a diameter, of a point that moves round a circle at a steady speed.
In SHM the velocity is and the acceleration is . The speed is at the mean position and zero at the ends. The acceleration is zero at the mean position and at the ends, always pointing to the mean position.
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