# Moments and gears

In this lesson we look further at moments and also gears. We look at how the rotational effect of a force helps us in many everyday situations.

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

# Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Q1.If I move a force further away from a pivot the moment will ................

1/6

Q2.If I move a force closer to a pivot the moment will ................

2/6

Q3.What are the units of a moment?

3/6

Q4.Recall the correct equation to calculate a moment

4/6

Q5.Choose all 3 things that a lever consists of

Select three (3) boxes

5/6

Q6.Levers are described as what?

6/6

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

# Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Q1.If I move a force further away from a pivot the moment will ................

1/6

Q2.If I move a force closer to a pivot the moment will ................

2/6

Q3.What are the units of a moment?

3/6

Q4.Recall the correct equation to calculate a moment

4/6

Q5.Choose all 3 things that a lever consists of

Select three (3) boxes

5/6

Q6.Levers are described as what?

6/6

# Video

Click on the play button to start the video. If your teacher asks you to pause the video and look at the worksheet you should:

• Click "Close Video"
• Click "Next" to view the activity

Your video will re-appear on the next page, and will stay paused in the right place.

# Worksheet

These slides will take you through some tasks for the lesson. If you need to re-play the video, click the ‘Resume Video’ icon. If you are asked to add answers to the slides, first download or print out the worksheet. Once you have finished all the tasks, click ‘Next’ below.

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

# Moments and Gears

Assess your knowledge of the moments and gears lesson with this quiz.

Q1.The unit of force is

1/7

Q2.At least how many cogs are needed for a gear to work correctly?

2/7

Q3.Gears work by applying a turning force to one wheel. A interlocking wheel turns the adjacent wheel in which direction?

3/7

Q4.What prevents a gear from slipping?

4/7

Q5.A gear with a radius of 1 m creates a moment of 200 Nm. What could you assume the moment of the 2 m gear be?

5/7

Q6.How much will a 24 : 12 gear ratio speed up the rotation of a gear?

6/7

Q7.The moment about a 4 cm wheel is 8 Nm. What’s the moment about a 12 cm one?(Remember, the ratio of moments = ratio of radii)

7/7

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

# Moments and Gears

Assess your knowledge of the moments and gears lesson with this quiz.

Q1.The unit of force is

1/7

Q2.At least how many cogs are needed for a gear to work correctly?

2/7

Q3.Gears work by applying a turning force to one wheel. A interlocking wheel turns the adjacent wheel in which direction?

3/7

Q4.What prevents a gear from slipping?

4/7

Q5.A gear with a radius of 1 m creates a moment of 200 Nm. What could you assume the moment of the 2 m gear be?

5/7

Q6.How much will a 24 : 12 gear ratio speed up the rotation of a gear?

6/7

Q7.The moment about a 4 cm wheel is 8 Nm. What’s the moment about a 12 cm one?(Remember, the ratio of moments = ratio of radii)

7/7

# Lesson summary: Moments and gears

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To share your results with your teacher please complete one of the quizzes.

## Time to move!

Did you know that exercise helps your concentration and ability to learn?

For 5 mins...

Move around:
Walk

On the spot:
Chair yoga