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Northern IrelandPhysicsQuick questions

A2 1 Deformation, Thermal Physics, Circular Motion, SHM and Gravity

Quick questions on Simple harmonic motion: the defining condition, energy, damping and resonance - CCEA A-Level Physics

4short 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 the defining condition?
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This restoring condition arises whenever the net force is proportional to displacement, F=−kxF = -kx, as for a mass on a spring or, for small angles, a simple pendulum.
What is q1?
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A mass on a spring oscillates with amplitude 0.050 m0.050\ \text{m} and frequency 2.0 Hz2.0\ \text{Hz}. Find its maximum speed. [3 marks]
What is q2?
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State the condition for resonance. [1 mark]
What is q3?
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A trolley undergoing SHM has displacement x=0.040 mx = 0.040\ \text{m} at an instant when its amplitude is 0.10 m0.10\ \text{m} and ω=6.0 rad s−1\omega = 6.0\ \text{rad s}^{-1}. Find its speed at that instant. [2 marks]

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