Elasticity Springs Hooks Law (no point P)

The spring constant of an object tells you ...

• the type of spring

• the maximum extension

• how hard it is to change its length.

• what the spring is made of

The green section of the stretched spring in this image is called ...

(a)  

• extension
• compression

Which picture shows the stretched spring with

maximum elastic potential energy?

• A

• B

• C

• D

The unit of Spring Constant is ...

• N

• N/m

• m

The original length of a spring a rest is 20m

When a load is added, the stretched length is 30m.

What is the extension?

(a)  

A bungee rope has a spring constant of 5N/m. How much a person must weighs in Newton if we want it to extend (stretch) 10m?

• 20N

• 22cm

• 50N

• 50cm

• 21N

The person weighs 100 N

The bungee rope extends 20m

What is the Spring Constant?

force = spring constant x extension

(a)  

What is the unit of force used for the weights?

• g

• Nm

• m

• N/m

• N

you can distort an object using 1 force

• false

• true

If an object stretches because of tension, we say the object has been

(a)  

• extended
• compressed
• twisted