OCR A Level Physics

Topic Questions

A LevelPhysicsOCRTopic Questions5. Newtonian World & Astrophysics5.5 Simple Harmonic Oscillations

5.5 Simple Harmonic Oscillations

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1
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A simple harmonic oscillator has maximum speed 24 ms–1 and amplitude 5.6 cm.

What is its angular frequency?

  • 0.23 rads–1

  • 21 rads–1

  • 68 rads–1

  • 430 rads–1

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2
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For a simple harmonic oscillator, the maximum speed is vmax when the amplitude is A. The frequency of the oscillations is f.

Which expression is correct for this oscillator?

  • vmax = fA

  • vmax = 2πfA

  • vmax = f2A

  • vmax =  4π2f2A

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3
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The acceleration a of a simple harmonic oscillator is related to its displacement x by the equation

a = − 25 x.

What is the frequency of the oscillator?

  • 0.80 Hz

  • 1.3 Hz

  • 4.0 Hz

  • 5.0 Hz

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4
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The graph describes the displacement x of a simple harmonic oscillator with time.  Which of the equations below describes this motion correctly?

5-5-mcq-m-q1-ocr-al-physics

  • x space equals space 5 space sin left parenthesis 2 pi t right parenthesis

  • x space equals space 10 space sin open parentheses fraction numerator 2 pi over denominator 6 end fraction t close parentheses

  • x space equals space 10 space cos open parentheses 12 straight pi t close parentheses

  • x space equals space 10 space cos open parentheses pi over 3 t close parentheses

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5
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A weight on the end of a spring moving with simple harmonic motion completes 2 full oscillations per second. If its maximum acceleration is 50 ms-2 then calculate the amplitude, A.

  • 0.32 m

  • 1.2 m

  • 1.25 m

  • 2.5 m

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