Understanding Rotational Kinetic Energy

Understanding Rotational Kinetic Energy

Assessment

Interactive Video

Physics, Science

9th - 12th Grade

Hard

Created by

Mia Campbell

FREE Resource

Dan Fullerton introduces rotational kinetic energy, comparing it to translational kinetic energy. He explains the parallels between the two, using examples like a basketball and a bowling ball to calculate kinetic energies. The video also covers the effects of changing moment of inertia on angular velocity, demonstrated through an ice skater problem.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the formula for rotational kinetic energy?

I alpha

1/2 I omega^2

mgh

1/2 mv^2

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is an analogy for angular displacement?

F = ma

s = r theta

v = r omega

a = r alpha

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How do you calculate the translational kinetic energy of an object?

1/2 I omega^2

F = ma

mgh

1/2 mv^2

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the formula for translational kinetic energy?

1/2 mv^2

F = ma

1/2 I omega^2

mgh

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to an ice skater's angular velocity when she pulls her arms in?

It decreases

It remains the same

It becomes zero

It increases

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If the moment of inertia is halved and angular velocity is doubled, what happens to the rotational kinetic energy?

It remains the same

It is halved

It is doubled

It quadruples

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the moment of inertia for a solid sphere?

2/5 MR^2

1/2 MR^2

MR^2

3/5 MR^2

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