Simple Harmonic Motion
x(t) = A cos(ωt + φ) — the canonical oscillation.
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Class 11 · Notes
Oscillations— Notes, Formulas & Revision
Complete revision notes and formulas for Oscillations (Class 11). Curated for JEE, NEET, AP Physics, SAT, and CUET. Tap any topic to open the live simulation and full PYQ set.
Displacement vs Time
Live x(t) graph with adjustable A, ω, φ.
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Velocity vs Time
v = -Aω sin(ωt) — 90° lag from x.
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Acceleration vs Time
a = -ω² x — 180° out of phase.
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Spring-Mass Oscillator
ω = √(k/m), animated zigzag spring.
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Vertical Spring (gravity)
x_eq = mg/k offset; period unchanged.
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Energy in SHM (KE ↔ PE)
E = ½kA² constant — KE/PE swap.
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Period vs Mass
T ∝ √m — square-root curve.
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Period vs Spring Constant
T ∝ 1/√k — stiffer spring → faster.
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Simple Pendulum
T = 2π√(L/g) — animated swing.
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Pendulum: Length vs Period
T ∝ √L plot.
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Pendulum: Effect of Gravity
Compare on Earth, Moon, Mars, Jupiter.
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Damped Oscillations
Exponential decay envelope.
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Forced Oscillations
Amplitude vs driving frequency curve.
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Resonance (Mechanical)
Q-factor controls peak sharpness.
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Oscillations on sciphylab (also known as SciPhy, SciPhy Lab, SciPhy Labs). Free physics revision for Class 11, JEE Mains, JEE Advanced, NEET UG, AP Physics 1/2/C, SAT Subject Physics, and CUET-UG.