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Oscillations and Waves

Quick questions on Energy in simple harmonic motion: H2 Physics Oscillations and Waves

5short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.

What is kinetic energy in SHM?
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Using the velocity-displacement relation v=ωx02−x2v = \omega\sqrt{x_0^2 - x^2}, the kinetic energy is:
What is potential energy in SHM?
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The potential energy stored in the restoring system is:
What is q1?
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State where in an oscillation the kinetic energy and the potential energy are each maximum. [2 marks]
What is q2?
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A body in SHM has total energy 0.080 J0.080\ \text{J}. Find its kinetic energy when its displacement is half the amplitude. [2 marks]
What is q3?
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Explain how the total energy of an oscillator changes if its amplitude is tripled, the mass and frequency unchanged. [2 marks]

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