Oscillatory motion: periodic motion that moves back and forth over the same path. Period (t): the time required for a motion to repeat, time required for one cycle of periodic motion. Frequency: the number of oscillations per unit time: f=1/t. Where a is the amplitude of motion, w is the angular frequency of motion, and f is the frequency of motion. A linear restoring force will give you simple harmonic motion. The linear restoring force tries to push the mass back to equilibrium position. Energy doesn"t change when mass is doubled, however, maximum velocity does. Periodic disturbance transfer of energy without transferring materials. Transverse: disturbance is perpendicular to direction of propagation. Longitudinal: disturbance is parallel to direction of propagation v: velocity of wave (constant for constant medium) : wavelength, repeated disturbance f: frequency, number of full waves that pass a point. T: period, time for one wavelength to pass a point v=distance/time=x/t=f .
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