# Ch 7: Rotational Motion in Physics: Tutoring Solution

### About This Chapter

## How it works:

- Begin your assignment or other high school physics work.
- Identify the rotational motion in physics concepts 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 High School Physics Tutoring Solution will benefit any student who is trying to learn about rotational motion in physics and earn better grades. This resource can help students including those who:

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

## Why it works:

**Engaging Tutors:**We make learning about rotational motion in physics 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 in physics 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

- Learn about the differences between translational and rotational motion.
- Define rotational kinematics and identify five kinematics qualities.
- Review rotational dynamics and torque.
- Study rotational inertia and change of speed.
- Explore kinetic energy of rotation, rolling motion and the motion of inertia.
- Understand work and power in rotational motion.
- Differentiate between angular and linear momentum.
- Examine conservation of angular momentum.
- Describe an object in equilibrium and state the conditions for translation 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.

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### Other Chapters

Other chapters within the High School Physics: Tutoring Solution course

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