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Circular motion and vibration defintions

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Key definitions of unit 3.1 and 3.2 A2 physics

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  • March 20, 2024
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Period

Free oscillations • The time it takes to complete damping

when an oscillatory system one circuit of an oscillation • The dying away, due Forced Vibrations

is displaced and released. to resistive forces, of when a sinusodically varying force is

Frequency the amplitude of free applied to an oscillatory system,

Simple Harmonic motion • The number of complete oscillations causing it to oscillate with the

when an object moves such oscillations per second. frequency of the applied force.

that it's acceleration is always directed critical damping

towards a fixed point and is proportional
Definitions • when the resistive forces become

to the distance from the fixed point. large enough to prevent oscillations

Amplitude occurring.

Angular Velocity • The maximum displacement

The angle swept out by the from it's equilibrium Resonance
radius per second of an position. • When the frequency of the

object describing a circular driving force is equal to the

path natural frequency, the amplitude

of vibrations in a system become

large.

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