How does the particle model relate to material under stress? - OCR 21C

1

How might the shape of an object change if forces act away from each other in a straight line?

2

How might the shape of an object change if forces act towards each other in a straight line?

3

Which word describes an object that will return to its original shape when forces are removed?

4

At what point does the behaviour of a spring tend to become non-linear?

5

What is the unit for the spring constant?

6

What is the name for energy stored by a stretched spring?

7

Which equation gives the energy stored by a stretched spring?

8

A spring extends elastically by 10 cm when a force of 20 N is applied to it. What force would be needed to extend the spring by 5 cm?

9

A spring extends elastically by 0.1 m when a force of 2 N is applied. What is the value of its spring constant?

10

How can the work done in stretching a spring be calculated from a force-extension graph?