*variables* ω: angular velocity α: angular acceleration θ: angle r: length of pendulum m: weight g: gravity acceleration ω0 and θ0 means initial value of ω and θ Calculation: *Definition Tangential velocity (v)= rω Tangential acceleration (a)= rα *equation of motion Tangential force(ma) = mgcosθ α = mgcosθ/r ω = integral αΔt
