# Ch 11: Basics of Rotational Motion

### About This Chapter

## Basics of Rotational Motion - Chapter Summary

For an overview of rotational motion in physics, work through this mobile-friendly physics chapter. As you progress through this series of concise and informative lessons, you'll review topics like centripetal force, kinematics qualities, rotational motion, and much more. Each lesson comes with a short self-assessment quiz to help you check your understanding of key terms and concepts. Access the chapter at any time, and study on any computer or mobile device. When you're finished working through the chapter, you should be able to:

- Differentiate between translational and rotational motion
- Define the concepts of centripetal force and uniform circular motion
- Compare the center of gravity and stability
- Use rotational kinematics equations
- Identify the five kinematics qualities
- Explain the relationship between rotational dynamics and torque
- Assess the kinetic energy of rotation
- Evaluate work and power as they relate to rotational motion
- Apply rotational motion formulas

### 1. Differences Between Translational & Rotational Motion

After watching this lesson, you'll be able to explain the difference between translational and rotational motion, explain how translational quantities are replaced by rotational ones in physics and apply Newton's First Law to rotation. A short quiz follows.

### 2. Centripetal Force: Definition, Examples & Problems

After watching this video, you should be able to explain what centripetal force is, identify the centripetal force in a particular situation, and solve problems using the centripetal force equation. A short quiz will follow.

### 3. Stability & Center of Gravity

Discover what stability means and why center of gravity is so important to understanding it. Then learn about the different states of stability and how to tell the difference between them.

### 4. Uniform Circular Motion: Definition & Mathematics

After watching this lesson, you will be able to explain what uniform circular motion is, in terms of both acceleration and forces. You will also be able to use equations for centripetal force and acceleration to solve problems. A short quiz will follow.

### 5. Rotational Kinematics: Definition & Equations

After watching this lesson, you should be able to explain what kinematics is, give a rotational variable that corresponds to each linear kinematic variable, and solve problems using rotational kinematics equations. A short quiz will follow.

### 6. Five Kinematics Quantities & the Big 5 Equations

After watching this lesson, you will be able to list the five kinematics variables in rotational motion and use the five equations of constant acceleration to solve problems involving rotational motion. A short quiz will follow.

### 7. Torque: Concept, Equation & Example

After watching this lesson, you will be able to explain what torque is conceptually and mathematically and use both the equation and Newton's First Law for rotation to solve problems involving torque. A short quiz will follow.

### 8. Kinetic Energy of Rotation

After watching this lesson, you will be able to explain what kinetic energy of rotation is, provide the equation to calculate it, and solve simple kinetic energy of rotation problems. A short quiz will follow.

### 9. Work & Power in Rotational Motion

After watching this lesson, you will be able to explain what work and power are in the context of rotational motion and use equations to solve problems involving rotational work and power. A short quiz will follow.

### 10. Law of Conservation of Angular Momentum

Learn what we mean by conservation of angular momentum. Then, explore examples of how it affects the real world by looking at swivel chairs, asteroids, and figure skaters!

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### Other Chapters

Other chapters within the Physics 101: Intro to Physics course

- Intro to Physics
- Overview of Vectors
- Overview of Kinematics
- Overview of Forces
- Overview of Gravity
- Basics of Newton's First Law
- Basics of Newton's Second Law
- Basics of Newton's Third Law
- Energy and Work in Physics
- Overview of Linear Momentum in Physics
- Waves in Physics
- Sound & Light in Physics
- Basics of Optics
- Fluid Dynamics in Physics
- Basics of Thermodynamics in Physics
- Overview of Electrostatics
- Overview of Magnetism
- Basics of Nuclear Physics
- Studying for Physics 101