SHM -physics

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6 Terms

1
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damping

exponential decay of simple harmonic motion amplitude due to energy loss to heat and sound energy via frictional forces

2
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resonance

when a driving oscillator has a frequency (period) which matches the natural frequency (or period) of an oscillating system

3
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conditions for SHM

-restoring force must be directly proportional to displacement y from equilibrium

-restoring force is oppositely directed to displacement y from equilibrium

4
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total energy in SHM

Etotal = Ep + Ek

5
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extra condition for SHM for pendulum

the angle of the swing from the vertical must be less than 10 degrees

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how shaking the top end of a cord causes SHM

-the top of the cord must be shaken at the natural (resonant) frequency

-this results in resonance, where energy is transferred into the system via gravitational potential energy and kinetic energy

-the shaking causes a standing wave to form in the cord