# Robert Hooke and uses of elastic objects

In this lesson we learn about Robert Hooke's life and other discoveries. We also discuss uses of elastic objects and how different spring constant effect how useful they are.

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.What does the force vs extension graph show?

1/9

Q2.What is the point called where the graph starts to curve?

2/9

Q3.What happens after the elastic limit?

3/9

Q4.For an elastic object, when the force doubles, .......

4/9

Q5.For an elastic object, when the extension is divided by 3, .......

5/9

Q6.In the equation F = k x e, what does F represent?

6/9

Q7.In the equation F = k x e, what does e represent?

7/9

Q8.In the equation F = k x e, what does k represent?

8/9

Q9.What force is required to extend an object with spring constant 4 N/m to 2 m?

9/9

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.What does the force vs extension graph show?

1/9

Q2.What is the point called where the graph starts to curve?

2/9

Q3.What happens after the elastic limit?

3/9

Q4.For an elastic object, when the force doubles, .......

4/9

Q5.For an elastic object, when the extension is divided by 3, .......

5/9

Q6.In the equation F = k x e, what does F represent?

6/9

Q7.In the equation F = k x e, what does e represent?

7/9

Q8.In the equation F = k x e, what does k represent?

8/9

Q9.What force is required to extend an object with spring constant 4 N/m to 2 m?

9/9

# 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.

Quiz:

# Robert Hooke and Uses of Elastic Objects

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

Q1.For an object with a larger spring constant, the force required to stretch it would be

1/9

Q2.This means more work is done so the energy stored in the spring is

2/9

Q3.For an object with a smaller spring constant the force required to stretch or compress it is

3/9

Q4.This means less work is done so the energy stored in the spring is

4/9

Q5.In a bow and arrow, when we let go of the string, the energy is transferred from the elastic potential store to the

5/9

Q6.Use Hooke's Law: Force = Spring constant x extension to calculate the force required to stretch a 5 N/m spring to 2 m

6/9

Q7.Use Hooke's Law: Force = Spring constant x extension to calculate the force required to stretch a 0.5 N/m spring to 4 m

7/9

Q8.Use Hooke's Law: Force = Spring constant x extension to calculate the extension produced if a force of 10 N is exerted on a spring with a constant of 5 N/m

8/9

Q9.Use Hooke's Law: Force = Spring constant x extension to calculate the spring constant if an extension of 4 m is produced with a force of 32 N.

9/9

Quiz:

# Robert Hooke and Uses of Elastic Objects

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

Q1.For an object with a larger spring constant, the force required to stretch it would be

1/9

Q2.This means more work is done so the energy stored in the spring is

2/9

Q3.For an object with a smaller spring constant the force required to stretch or compress it is

3/9

Q4.This means less work is done so the energy stored in the spring is

4/9

Q5.In a bow and arrow, when we let go of the string, the energy is transferred from the elastic potential store to the

5/9

Q6.Use Hooke's Law: Force = Spring constant x extension to calculate the force required to stretch a 5 N/m spring to 2 m

6/9

Q7.Use Hooke's Law: Force = Spring constant x extension to calculate the force required to stretch a 0.5 N/m spring to 4 m

7/9

Q8.Use Hooke's Law: Force = Spring constant x extension to calculate the extension produced if a force of 10 N is exerted on a spring with a constant of 5 N/m

8/9

Q9.Use Hooke's Law: Force = Spring constant x extension to calculate the spring constant if an extension of 4 m is produced with a force of 32 N.

9/9

# Lesson summary: Robert Hooke and uses of elastic objects

## Time to move!

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

For 5 mins...

Move around:
Jog

On the spot:
Dance