Hookes Law

Problem

I have been asked to investigate the stresses and strains on the Queens bridge caused by
traffic.

Hypothesis

I predict that as the mass increases the sag on the bridge will increase as well, thus obeying
Hookes law.

Variables

The span of the bridge
The thickness of the bridge
The width of the bridge
The material that the bridge is made of
The mass put on the bridge

Apparatus

Pen
Paper
2 G clamps
Boss and clamp
Sand bucket
2 Metre rulers
Pointer
2 Stools
Bosshead
Retort stand
10 x 100g Masses

Fair Test

To make it a fair test i will keep:
The span of the bridge
same ruler metre

Safety

Clamp metre rulers to the stools so that they do not fall
Set a sand bucket directly under weights so that if they fall they will do so into the
bucket
Sellotape weights to the ruler so they dont fall

Observations / Measurements

I will measure the weight on the bridge two ti...