ELASTICITY ELASTICITY AND AND

HOOKE’S LAWHOOKE’S LAW

ELASTICITY ELASTICITY AND AND

HOOKE’S LAWHOOKE’S LAW

ELASTICITY• Rubber• Spring• Plastic• Wood• Aluminum• Steel

Questions • 1. If you pull the rubber stronger,

then what will happen to the rubber?

• 2. If you try to hang • First it will be changed in shape• Then it will cut off

Conclusion• Some materials have

characteristic if a force act on it.

• To choose the material of building• To know the strength of the rope

that safely use by the human to bring heavy things

How do we know the elastic limit?

Experimental result:force

surface areaincrease in length

Hooke's law

exercises• If the spring hang by the mass

300 gr it will increase of 5 cm. How if the spring hang by the mass of 500 gr, how many the length will increase?

• Does the spring will be lack off?