# Ch 9: AP Physics 1: Rotational Motion

Watch video lessons to learn about rotational motion, as well as how to describe it. Use the quizzes that follow each lesson to help you gauge your comprehension of the materials.

## AP Physics 1: Rotational Motion - Chapter Summary and Learning Objectives

Understanding rotational motion is important in calculating work, power and energy of moving objects. These lessons cover related concepts like rotational dynamics, rotational inertia, momentum and equilibrium. You'll see how to apply the principles and equations you learn to physics problems, both theoretically and in the real world. You'll also discover how to describe kinematics and how kinematics relates to physics' big five equations. In these lessons, you'll learn about:

• Types of motion
• Types of momentum
• Types of equilibrium
• The five kinematics qualities
• How kinetic and potential energy change for an object in motion

Video Objective
Differences Between Translational and Rotational Motion Describe how rotational motion differs from translational motion.
Rotational Kinematics: Definition and Equations Define rotational kinematics; explain how to generate kinetic equations for rotational motion.
Five Kinematics Qualities and the Big Five Equations Describe the five kinematics qualities in relationship to the big five equations.
Rotational Dynamics and Torque Define rotational dynamics and torque.
Rotational Inertia and Change of Speed Explain how rotational inertia affects the rotational speed of an object.
Kinetic Energy of Rotation Discuss how kinetic and potential energy change for a rotating disk and falling mass.
Rolling Motion and the Moment of Inertia Discuss how to observe the moment of inertia for two round objects rolling down an incline, and compare it to the theoretical value for that object; use the conservation of energy principles and concepts of rotational motion in the explanation.
Work and Power in Rotational Motion Discuss how to use translation motion formulas to determine the kinetic energy, work and power of an object in rotational motion.
Angular Momentum vs. Linear Momentum Explain the differences between angular and linear momentum.
Conservation of Angular Momentum Demonstrate how to use the law of conservation of angular momentum to solve word problems.
Equilibrium: Translational and Rotational Describe translational equilibrium and calculate forces that act upon objects in this state; describe rotational equilibrium, and calculate forces that act upon objects in this state.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
Not Taken
Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
Not Taken

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