Lesson 14 - Springs

What will a stretched spring try to do?

• Stretch further

• Nothing

• Compress

Which of these equations describes the force on a spring?

• F = mg

• F = -q*v*B

• F = -i*L*B

• F = -k*x

Which of these systems uses springs ?

• Slinky

• Stapler

• See-saws

• Swi ngs

Which of these are characteristics of a spring

• They can regain their shape

• They can store energy

• They are elastic

• They are rigid

If a spring is suspended from a roof, and a heavy mass is attached to the other end what will happen to the length of the spring?

• The spring will stretch

• The spring will compress

• Nothing will happen

• None of the above

What is the role of the spring in a stapler?

• To keep everything organized

• To ensure that the magazine is advanced every time it is used

• To make it look pretty

• to keep things orderly

What happens to the total energy of the spring as the key is turned?

• Increase in its potential energy

• The spring will tighten

• There will be a decrease in the potential

• No change

What steel is used to make springs? (Typically)

• Spring steel

• Stainless Steel

• Aluminium

• Wood

A spring is stretched 5 m with a spring constant of 1 N/m. What is the force experienced by the spring?

• 5 N of compression

• 5 N of stretching

• 0 N (not compressing/stretching)

• not enough information

Where else do you see springs ?