b) Oscillation

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Last updated 5:14 PM on 9/9/26
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8 Terms

1
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  • describe an oscillation


  • object is in equilibrium

  • a force is applied

  • (part of) the object is displaced

    • travels towards equilibrium position at increasing speed

      • accelerating

    • passes equilibrium position → slows down

    • reaches maximum positive displacement

    • travels towards equilibrium position at increasing speed

      • accelerating

    • passes equilibrium position → slows down

    • reaches maximum negative displacement

    • repeat


2
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  • define simple harmonic motion


  • an oscillation where a = -ω2x and ω is constant


3
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  • state the relationship between acceleration and displacement in simple harmonic motion


  • acceleration ∝ displacement


4
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  • state the direction of acceleration in simple harmonic motion


  • opposite in direction to displacement


5
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  • show a graph of acceleration against amplitude for an object in simple harmonic motion


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6
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  • state the value of the gradient


  • -ω2


7
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  • state what the gradient indicates about frequency/period


  • constant gradient = constant frequency/period

  • frequency/period → independent of amplitude

    • amplitude increases

    • speed increases

    • frequency/period remains constant


8
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  • define isochronous oscillator


  • an oscillator with a frequency/period independent of its amplitude