Moments and balance (Part 2)

In this lesson we discuss changing the moment of a force to balance an object. We also calculate the correct distance or force for an object to be balanced.

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!

Question 1

Question 2

Question 3

Question 4

Question 5

Question 6

Q1.What do we call the direction of moments that cause an object to rotate the same direction as clock hands?

Anticlockwise Up Down Clockwise

1/6

Q2.What do we call the direction of moments that cause an object to rotate the opposite direction to clock hands?

Anticlockwise Up Down Clockwise

2/6

Q3.For an object to be balanced....

Clockwise moment = Clockwise moment Anticlockwise moment = Anticlockwise moment Clockwise moment = Anticlockwise moment Clockwise moment is larger than Anticlockwise moment

3/6

Q4.What is a lever? Tick all three that apply

Select three (3) boxes

A Complex machine A rigid object A simple machine A flexible object Moves Up Rotates about a pivot

4/6

Q5.What is the moment of a 20N force, 0.5m away from the pivot?

200Nm 10Nm 10Ncm 2Ncm

5/6

Q6.What is the moment of a 5N force, 10cm away from the pivot?

500Nm 50Nm 50Ncm 0.5Ncm

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!

Question 1

Question 2

Question 3

Question 4

Question 5

Question 6

Q1.What do we call the direction of moments that cause an object to rotate the same direction as clock hands?

Anticlockwise Up Down Clockwise

1/6

Q2.What do we call the direction of moments that cause an object to rotate the opposite direction to clock hands?

Anticlockwise Up Down Clockwise

2/6

Q3.For an object to be balanced....

Clockwise moment = Clockwise moment Anticlockwise moment = Anticlockwise moment Clockwise moment = Anticlockwise moment Clockwise moment is larger than Anticlockwise moment

3/6

Q4.What is a lever? Tick all three that apply

Select three (3) boxes

A Complex machine A rigid object A simple machine A flexible object Moves Up Rotates about a pivot

4/6

Q5.What is the moment of a 20N force, 0.5m away from the pivot?

200Nm 10Nm 10Ncm 2Ncm

5/6

Q6.What is the moment of a 5N force, 10cm away from the pivot?

500Nm 50Nm 50Ncm 0.5Ncm

6/6

Video

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Worksheet

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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:

2b Moments and Balance

Don’t worry if you get a question wrong! Forgetting is an important step in learning. We will recap next lesson.

Question 1

Question 2

Question 3

Question 4

Question 5

Question 6

Question 7

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

Decrease Increase Stay the same

1/7

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

Decrease Increase Stay the same

2/7

Q3.To make the moment of a force bigger I should.....

move the force further from the pivot move the force closer to the pivot move the force up move the force down

3/7

Q4.To make the moment of a force smaller I should.....

move the force further from the pivot move the force closer to the pivot move the force up move the force down

4/7

Q5.The units of moment are (chose 2)

Select two (2) boxes

N Nm m cm Ncm Pa J

5/7

Q6.The units of distance are (chose 2)

Select two (2) boxes

N Nm m cm Ncm Pa J

6/7

Q7.The unit of force is

Select one (1) boxes

N Nm m cm Ncm Pa J

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:

2b Moments and Balance

Don’t worry if you get a question wrong! Forgetting is an important step in learning. We will recap next lesson.

Question 1

Question 2

Question 3

Question 4

Question 5

Question 6

Question 7

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

Decrease Increase Stay the same

1/7

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

Decrease Increase Stay the same

2/7

Q3.To make the moment of a force bigger I should.....

move the force further from the pivot move the force closer to the pivot move the force up move the force down

3/7

Q4.To make the moment of a force smaller I should.....

move the force further from the pivot move the force closer to the pivot move the force up move the force down

4/7

Q5.The units of moment are (chose 2)

Select two (2) boxes

N Nm m cm Ncm Pa J

5/7

Q6.The units of distance are (chose 2)

Select two (2) boxes

N Nm m cm Ncm Pa J

6/7

Q7.The unit of force is

Select one (1) boxes

N Nm m cm Ncm Pa J

7/7

Lesson summary: Moments and balance (Part 2)

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The next lesson in Forces in action is "Work done (Part 1)"

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