Formula Sheet: Oscillations Class 11 Physics Yashwant Parihar, June 11, 2026June 11, 2026 In this post, we will learn the Class 11 Physics oscillation formulas with the help of a formula sheet for JEE/NEET aspirants. This chapter, centring around Simple Harmonic Motion (SHM), bridges the gap between mechanics and wave optics, making it a favourite area for examiners to twist concepts. This post covers everything from basic kinematics equations to damped oscillations, neatly organised for quick scanning.Table of Contents Oscillations (SHM) Formula Sheet Class 111. Periodic and Oscillatory Motion2. Linear Simple Harmonic Motion (SHM)3. Kinematics of SHM4. Energy in SHM5. Time Period of Standard SHM Systems6. Damped and Forced OscillationsOscillations (SHM) Formula Sheet Class 111. Periodic and Oscillatory MotionFrequency:f=1Tf = \frac1TAngular Frequency:ω=2πf=2πT\omega = 2 \pi f = \frac {2 \pi}{T}2. Linear Simple Harmonic Motion (SHM)Restoring Force:F=−kxF = -kxDifferential Equation of SHM:dx2dt2+ω2x=0\frac{dx^2}{dt^2} + \omega^2x = 0Angular Frequency:ω=km\omega = \sqrt {\frac km}3. Kinematics of SHMDisplacement:x=Asin(ωt+ϕ)x = Asin(\omega t + \phi)Velocity:v=dxdt=Aωcos(ωt+ϕ)v = \frac{dx}{dt} = A\omega cos(\omega t + \phi)Acceleration:a=dvdt=Aω2sin(ωt+ϕ)a = \frac{dv}{dt} = A\omega ^2 sin(\omega t + \phi)4. Energy in SHMKinetic Energy:K=12kv2K = \frac12 kv^2Potential Energy:U=12kx2U = \frac12 kx^2Total Energy:E=K+U=12kA2E = K + U = \frac12 kA^25. Time Period of Standard SHM SystemsSimple Pendulum:T=2πLgT = 2 \pi \sqrt {\frac L g}Spring-Mass Systems:T=2πmkT = 2\pi \sqrt{\frac mk}Series Combination:1keq=1k1+1k2\frac {1}{k_{eq}} = \frac {1}{k_{1}} +\frac {1}{k_2}Parallel Combination:Keq=k1+k2K_{eq} = k_1 + k_2Physical Pendulum (Rigid Body):T=2πImgdT = 2 \pi \sqrt{\frac{I}{mgd}}Torsional Pendulum:T=2πICT = 2\pi \sqrt{{ \frac{I}{C} }}6. Damped and Forced OscillationsDamped SHM Equation:F=−kx−bvF = -kx -bvx(t)=Ae−bt2mcos(w′t+ϕ)x(t) = Ae^{-\frac{bt}{2m}} cos (w’t + \phi)Damped Angular Frequency:ω′=km−b24m2\omega’ = \sqrt {\frac{k}{m} – \frac{b^2}{4m^2}} Formula Sheet Physics Formula Sheet Formula SheetPhysics Formula Sheet