AP Physics 1 — Torque & Rotation Equation Finder AP Physics 1 — Torque & Rotation Select the variables you know. Equations will show missing variables or indicate all variables are known. Known Variables τ — Torque r — Lever arm / radius F — Force applied θ — Angle between force and lever arm I — Moment of inertia α — Angular acceleration ω — Angular velocity ω₀ — Initial angular velocity θ_rot — Angular displacement L — Angular momentum t — Time Find Equations Possible Equations