# Ch 6: Rotational Motion Principles: Tutoring Solution

### About This Chapter

## How it works:

- Begin your assignment or other NY Regents Exam prep work.
- Identify the concepts of rotational motion principles that you're stuck on.
- Find fun videos on the topics you need to understand.
- Press play, watch and learn!
- Complete the quizzes to test your understanding.
- As needed, submit a question to one of our instructors for personalized support.

## Who's it for?

This chapter of our NY Regents Exam - Physics Tutoring Solution will benefit any student who is trying to learn about rotational motion principles and pass the physics portion of the exam. This resource can help students including those who:

- Struggle with understanding rotational dynamics, kinetic energy, momentum or any other rotational motion topic
- Have limited time for studying
- Want a cost effective way to supplement their physics learning
- Prefer learning physics visually
- Find themselves failing or close to failing their rotational motion principles unit
- Cope with ADD or ADHD
- Want to get ahead in physics
- Don't have access to their physics teacher outside of class

## Why it works:

**Engaging Tutors:**We make learning rotational motion principles simple and fun.**Cost Efficient:**For less than 20% of the cost of a private tutor, you'll have unlimited access 24/7.**Consistent High Quality:**Unlike a live physics tutor, these video lessons are thoroughly reviewed.**Convenient:**Imagine a tutor as portable as your laptop, tablet or smartphone. Learn about rotational motion principles on the go!**Learn at Your Pace:**You can pause and rewatch lessons as often as you'd like, until you master the material.

## Learning objectives

- Analyze the differences between translational and rotational motion.
- Understand kinematic equations for rotational motion.
- Relate five kinematic qualities to five equations.
- Study rotational dynamics and torque.
- Learn the role that rotational inertia plays in the change of speed of an object.
- Understand the kinetic energy of a rotating disk and falling mass.
- Study conservation of energy principles.
- Apply translational motion formulas.
- Solve word problems relating to angular momentum and 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.

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### Other Chapters

Other chapters within the NY Regents Exam - Physics: Tutoring Solution course