# Ch 7: Rotational Motion in Physics: Homework Help

### About This Chapter

## How it works:

- Identify which concepts are covered on your rotational motion in physics homework.
- Find videos on those topics within this chapter.
- Watch fun videos, pausing and reviewing as needed.
- Complete sample problems and get instant feedback.
- Finish your rotational motion in physics homework with ease!

## Topics from your homework you'll be able to complete:

- Distinguishing between translational and rotational motion
- Generating kinematic equations for rotational motion
- Understanding the five kinematics qualities
- Explaining rotational dynamics and torque
- Recognizing how rotational inertia affects an object's speed
- Solving kinetic energy of rotation problems
- Applying conservation of energy principles to two objects rolling down an inclined ramp
- Using translation motion formulas
- Understanding the differences between angular and linear momentum
- Solving angular momentum word problems
- Calculating forces that act on translational equilibrium and rotational equilibrium

### 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. 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.

### 3. 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.

### 4. 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.

### 5. Rotational Inertia & Change of Speed

After watching this lesson, you will be able to explain what rotational inertia is, describe how it makes it harder to change the speed of rotation, and solve rotational inertia problems. A short quiz will follow.

### 6. 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.

### 7. Rolling Motion & the Moment of Inertia

After watching this lesson, you should be able to figure out the moment of inertia of an object as it rolls down a ramp and compare it to a theoretical value. A short quiz will follow.

### 8. 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.

### 9. Angular Momentum vs. Linear Momentum

After watching this lesson, you will be able to explain the difference between angular and linear momentum and solve problems using angular momentum equations. A short quiz will follow.

### 10. Conservation of Angular Momentum

After watching this video you will be able to explain what is meant by conservation of angular momentum. You will also be able to use this concept along with the equation to solve problems. A short quiz will follow.

### 11. Equilibrium: Translational & Rotational

Learn about the requirements for an object to be under translational or rotational equilibrium. Then work through a couple example problems that show how we can use translational and rotational equilibrium to find the forces acting on an object.

### 12. The Golf Swing: Basics & Tips

Some have described the game of golf as a peaceful walk in the beautiful outdoors, ruined by a little white ball. Read on for some helpful tips to keep your game from being ruined.

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### Other Chapters

Other chapters within the High School Physics: Homework Help Resource course

- Introduction to Physics: Homework Help
- Vectors in Physics: Homework Help
- Kinematics in Physics: Homework Help
- Newton's Laws in Physics: Homework Help
- Work, Energy, & Power in Physics: Homework Help
- Linear Momentum in Physics: Homework Help
- Circular Motion and Gravitation in Physics: Homework Help
- Oscillations in Physics: Homework Help
- Electrical Forces and Fields in Physics: Homework Help
- Potential and Capacitance in Physics: Homework Help
- Direct Current Circuits in Physics: Homework Help
- Magnetism in Physics: Homework Help
- Waves, Sound, and Light: Homework Help
- Atomic and Nuclear Physics: Homework Help
- Fluid Mechanics in Physics: Homework Help
- Thermal Physics & Thermodynamics: Homework Help
- Relativity & Quantum Theory in Modern Physics: Homework Help
- The Universe: Homework Help
- Physics Lab - Motion: Homework Help
- Physics Lab - Matter & Light: Homework Help
- Physics Lab - Electricity: Homework Help