Edexcel International A Level Physics

Topic Questions

International A LevelPhysicsEdexcelTopic Questions5. Thermodynamics, Radiation, Oscillations & CosmologySimple Harmonic Motion

Simple Harmonic Motion

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1
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A mass oscillates with simple harmonic motion about a fixed point O.

Which of the following statements about the motion of the mass is correct?

  • Its velocity is always towards O.

  • Its acceleration is always towards O.

  • Its acceleration is directly proportional to its velocity.

  • Its acceleration and its velocity are always in opposite directions.

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2
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In the Pantheon in Paris there is a pendulum that takes 8.25 s to swing from one extreme position to the other.

Which of the following expressions gives the length of the pendulum?

  • fraction numerator 4 straight pi squared over denominator open parentheses 8.25 close parentheses squared space cross times 9.81 end fraction

  • fraction numerator 4 straight pi squared over denominator open parentheses 16.5 close parentheses squared space cross times 9.81 end fraction

  • fraction numerator open parentheses 8.25 close parentheses squared space cross times 9.81 over denominator space 4 straight pi squared end fraction

  • fraction numerator open parentheses 16.5 close parentheses squared space cross times 9.81 over denominator space 4 straight pi squared end fraction

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3
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The gravitational field strength at the surface of the Moon is one sixth of that at the surface of the Earth. A simple pendulum has a period T at the surface of the Earth.

What would be the time period of the same pendulum at the surface of the Moon?

  • T over 6

  • fraction numerator T over denominator square root of 6 end fraction

  • T

  • T square root of 6

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4
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A mass oscillates with simple harmonic motion with a frequency of 0.5 Hz.
The amplitude of the oscillation is 0.3 m.

Which of the following is an expression for the maximum velocity in m s−1 of the mass?

  • open parentheses fraction numerator 2 straight pi over denominator 0.5 end fraction close parentheses cross times 0.3

  • open parentheses fraction numerator 2 straight pi over denominator 0.5 end fraction close parentheses cross times 0.15

  • 2 pi space cross times space 0.5 space cross times space 0.3

  • 2 pi space cross times space 0.5 space cross times space 0.15

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5
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A mass oscillates with simple harmonic motion. The graph shows how the acceleration a of the mass depends upon displacement x from the equilibrium position.

q10-wph15-05-oct-2021-edexcel-int-as-and-a-level-phy

Which of the following gives the period of oscillation, in seconds, of the mass?

  • 2 straight pi cross times open parentheses fraction numerator 3.2 over denominator 0.20 end fraction close parentheses

  • 2 straight pi cross times open parentheses fraction numerator 0.20 over denominator 3.2 end fraction close parentheses

  • 2 straight pi cross times square root of open parentheses fraction numerator 3.2 over denominator 0.20 end fraction close parentheses end root

  • 2 straight pi cross times square root of open parentheses fraction numerator 0.20 over denominator 3.2 end fraction close parentheses end root

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6
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An object oscillates with simple harmonic motion. The period of oscillation is 0.55 s and the amplitude is 0.25 m.

Which of the following shows a correct calculation of the maximum velocity of the object?

  • 2 pi space cross times space 0.55 space cross times space 0.25

  • fraction numerator 2 straight pi over denominator 0.55 end fraction space cross times space 0.25

  • left parenthesis 2 pi space cross times space 0.55 right parenthesis squared space cross times space 0.25

  • open parentheses fraction numerator 2 straight pi over denominator 0.55 end fraction close parentheses squared space cross times space 0.25

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