Edexcel•A-Level•Physics
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Oscillations
Simple harmonic motion, damping and resonance
Practice 37 subtopics in Oscillations. All questions match the Edexcel A-Level specification.
About Oscillations
Oscillations is a key topic in the Edexcel A-Level Physicsspecification. This topic covers simple harmonic motion, damping and resonance.
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Conditions for SHMDefining equation: a = -ω²xAngular frequency: ω = 2πfDisplacement: x = A cos(ωt)Velocity: v = -Aω sin(ωt)v = ±ω√(A² - x²)Maximum velocity: vmax = ωAAcceleration: a = -Aω² cos(ωt)Maximum acceleration: amax = ω²APhase relationshipsGraphs of x, v, a against timeMass-spring system: T = 2π√(m/k)Simple pendulum: T = 2π√(L/g)Core practical: Mass-spring oscillationsCore practical: Simple pendulumKinetic energy in SHMPotential energy in SHMTotal energy: E = ½kA² = ½mω²A²Energy-time graphsEnergy-displacement graphsEnergy interchangeFree oscillationsNatural frequencyDamped oscillationsLight dampingHeavy dampingCritical dampingAmplitude decay in damped systemsForced vibrationsDriving frequencyResonanceResonance at f = f₀Amplitude-frequency graphsEffect of damping on resonanceSharpness of resonanceExamples of resonanceUseful and harmful resonance
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