Angular Acceleration
Definition
The rate of change of angular velocity over time. Related to torque by Newton's second law for rotation: τ = I × α, where τ is torque, I is moment of inertia, and α is angular acceleration. Units: rad/s².
Practical Note
To calculate motor torque requirements for acceleration: τ = I × α. For constant angular acceleration from rest: ω = α × t and θ = ½ × α × t². 1 rev/s² = 2π rad/s².
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