Conservation of Angular Momentum

In order to do a lot of flips an Olympic diver would want:

• A high rotational inertia
• A low rotational inertia
• A low linear acceleration
• A low angular velocity

What happens to his rotational inertia when a figure skater brings in his arms?

• Increase his rotational inertia
• Decrease his rotational inertia
• has no affect

What is happening to the ice skater?

• Decreased Angular velocity, decreased rotational inertia

• Decreased Angular velocity, increased rotational inertia

• Increased Angular velocity, increased rotational inertia

• Increased Angular velocity, decreased rotational inertia

What does Rotational Inertia depend on?

• Mass

• Mass Distribution

• Both Mass and its Distribution

• Neither Mass nor its distribution

Angular Momentum is the product of...

• rotational inertia and linear velocity.

• linear inertia and angular velocity.

• linear momentum and angular velocity

• rotational inertia and angular velocity.

Which of these items is easier to turn?

• Left

• Right

• Both are just as easy to turn

What does this formula measure?

• moment of inertia
• impulse
• electric current
• angular momentum

According to the Law of Conservation of Angular Momentum, if I (momentum of inertia) increases, what will happen to ω?

• Decrease
• Stay the same
• Increase

Which of these objects has the most rotational inertia?

• Left

• Middle

• Right

What happens to rotational inertia of an object when mass is moved close to axis of rotation?

• Decreases

• Increases

• Stays the Same