Oscillations Class 11 Physics Notes – Formulas & Quick Revision

Oscillations (SHM) mein simple harmonic motion ke equations, pendulum aur spring systems aate hain — JEE/NEET dono ke liye crucial. Yahan aapko is chapter ke sabse important formulas aur quick revision points free milte hain — NCERT/CBSE syllabus ke hisaab se, boards aur JEE/NEET dono ke liye.

Important Formulas & Concepts — Oscillations

• SHM: a = −ω²x; F = −kx
• x = A·sin(ωt + φ); v = Aω·cos(ωt + φ)
• v = ω√(A² − x²); v_max = Aω; a_max = ω²A
• T = 2π√(m/k) (spring); T = 2π√(L/g) (pendulum)
• KE = ½mω²(A² − x²); Total E = ½mω²A²
• Springs series: 1/k = 1/k₁ + 1/k₂; parallel: k = k₁ + k₂
• Physical pendulum: T = 2π√(I/mgd)
• Damped: amplitude = A₀·e^(−bt/2m)

Quick Revision Points

• SHM mein acceleration displacement ke opposite hoti hai
• Mean position par KE max, extreme par PE max
• Pendulum ka T mass par depend nahi karta
• Lift mein g_eff badlega to T badlega
• Energy ∝ A² — amplitude double, energy chaar guna

FAQ

SHM ke graphs important hain?

Bahut — x, v, a vs t aur energy graphs boards + JEE dono mein aate hain. PDF mein sab visual hain.

Spring combination problems tough lagte hain?

Complete notes mein series/parallel ke solved patterns hain — ek baar samajh lo, sab same hain.

Explore more: free sample notes, free calculators aur interactive simulators.