# Forces and elasticity (Part 1)

In this lesson we look at elastic objects, and the relationship between force and extension. We also go through the method for one of your required practicals.

Quiz:

# Intro quiz - Recap from previous lesson

Before we start this lesson, letâ€™s see what you can remember from this topic. Hereâ€™s a quick quiz!

Q1.What is the unit for work done?

1/6

Q2.1 J is equal to how many Newton-metres?

2/6

Q3.What is the equation that links distance, force and work done?

3/6

Q4.When work is done on an object against a frictional force, what happens to the object?

4/6

Q5.A man pushes a trolley with a force of 27 N a distance of 25 m. How much work did he do? Give your answer to 2 significant figures

5/6

Q6.A girl does 1200 J of work climbing a staircase. She has a weight of 400 N. How high did she climb?

6/6

Quiz:

# Intro quiz - Recap from previous lesson

Before we start this lesson, letâ€™s see what you can remember from this topic. Hereâ€™s a quick quiz!

Q1.What is the unit for work done?

1/6

Q2.1 J is equal to how many Newton-metres?

2/6

Q3.What is the equation that links distance, force and work done?

3/6

Q4.When work is done on an object against a frictional force, what happens to the object?

4/6

Q5.A man pushes a trolley with a force of 27 N a distance of 25 m. How much work did he do? Give your answer to 2 significant figures

5/6

Q6.A girl does 1200 J of work climbing a staircase. She has a weight of 400 N. How high did she climb?

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 â€˜Resume Videoâ€™ 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 â€˜Nextâ€™ below.

Quiz:

# Forces and Elasticity

Complete the quiz to see how much you have remembered.

Q1.Choose all three objects that will elastically deform

Select three (3) boxes

1/5

Q2.A student wants to investigate how force affects extension of a spring. What is the independent variable?

2/5

Q3.A student wants to investigate how force affects extension of a spring. What is the dependent variable?

3/5

Q4.What does elastic deformation mean?

4/5

Q5.Identify the relationship between force and extension in objects that elastically deform.

5/5

Quiz:

# Forces and Elasticity

Complete the quiz to see how much you have remembered.

Q1.Choose all three objects that will elastically deform

Select three (3) boxes

1/5

Q2.A student wants to investigate how force affects extension of a spring. What is the independent variable?

2/5

Q3.A student wants to investigate how force affects extension of a spring. What is the dependent variable?

3/5

Q4.What does elastic deformation mean?

4/5

Q5.Identify the relationship between force and extension in objects that elastically deform.

5/5

# Lesson summary: Forces and elasticity (Part 1)

## Time to move!

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

For 5 mins...

Move around:
Walk

On the spot:
Dance