Spring



K: spring constant (N/m), s: displacement (m), ω: angular velocity (rad/s), T: time period, m: mass of the object, A: amplitude






Springs In Series



k: spring constant of the system, T: time period of the system





Springs in Parallel







Simple Pendulum



ω: angular velocity (rad/s), T: time period , αo: angle at amplitude, A: amplitude, l: length of the pendulum






Motion Equations



S: displacement, α: angle, v: velocity, T: strength on the rod







Energy



Ep: potential energy, Ek: kinetic energy, E: mechanical energy





Change Of Period Following The Change Of The Temperature



Α: coefficient of linear expansion of the rod




Change Of Period Following The Change Of The Height



h: height of the pendulum, R: earth’s radius



Pendulum



I: moment of inertia, ω: angular velocity, m: mass of bob, d: OG, T: time period