Intro Quiz: Robert Hooke and uses of elastic objects

Video: Robert Hooke and uses of elastic objects

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Worksheet: Robert Hooke and uses of elastic objects

Exit Quiz: Robert Hooke and uses of elastic objects

Lesson summary: 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.

Science

Y9 Science

Key Stage 3

Year 9

What does the force vs extension graph show?

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

What happens after the elastic limit?

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

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

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

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

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

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

Hooke's Law

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

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

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

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

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

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

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

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

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.

Robert Hooke and uses of elastic objects

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