🌊 7. Oscillations & Waves
📖 Theory – 🌊 7. Oscillations & Waves
Simple harmonic motion (SHM): a = -ω²x.
Period of SHM: T = 2π/ω = 2π√(m/k) for a mass-spring system.
Period of a simple pendulum: T = 2π√(l/g).
Energy in SHM: total energy E = ½kA² = ½mω²A².
Wave properties: wavelength λ, frequency f, speed v = fλ.
Transverse waves: oscillations perpendicular to direction of propagation.
Longitudinal waves: oscillations parallel to direction of propagation.
The Doppler effect: change in frequency due to relative motion.
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