Key Takeaways
Lesson Description
Key Takeaways
• Rotational motion follows principles similar to linear motion.
• Torque causes rotational acceleration.
• Objects rotate about an axis.
• Rotational equilibrium requires zero net torque.
• Center of mass influences balance and stability.
• Angular momentum is conserved when external torque is absent.
Must Know Equations
Torque:
τ = rF sinθ
Rotational Equilibrium:
Στ = 0
Moment of Inertia:
I = Σmr²
Angular Momentum:
L = Iω
Must Know Vocabulary
Torque
Axis of Rotation
Moment of Inertia
Center of Mass
Angular Momentum
Rotational Equilibrium
AP Exam Focus
• Solve torque equilibrium problems.
• Analyze rotational systems conceptually.
• Identify conditions for rotational balance.