# Investigation of the relationship between extension of a spiral spring material per unit of load applied on it.

Investigation of the relationship between extension of a spiral spring material per unit of load applied on it.

Introduction

The objective of this investigation is to find out the relationship between the extension of a spiral spring per unit mass of load applied.

I believe that the following are two main factors or variables that affect in a big way the extension of a spring

Variables

• Firstly the force put on the spring which is the weights. I believe that the weights that are put on the spring will have the biggest affect on how the extents.

• Secondly the other variable is the extension. This is because the extension of the spiral spring changes with the load applied on it.

• Stiffness of the spring, an very stiff spring will extend lesser than a lesser stiff spring. This is because the particles are closer together so more load will need to be applied to weaken the bonds.

## Apparatus

The following equipment will be required in order to do this experiment:

• Firstly a clamp stand this will be used to this will be used to connect other apparatus in to one place. This will put the spring a good distanced up to prevent the spring from coming in to contact with the table which it will be on. The spring will be suspended from the stand to allow it enough space to stretch.

• Secondly two bosses will be used, one to hold the spiral spring in place and the other to hold the 1 meter ruler firmly in place. The bosses help secure all the apparatus in to place.

• Thirdly a weight hanger will be used to put the weights on the spring. The hanger will be connected to the bottom part of the spring.

• Also 100g weights will be put on the hanger one at a time.

• And lastly one last clamp will be used to clamp the bottom of the stand to the table. This is done to stop the stand from toppling over.

Procedure

After I have set all the equipment in to place. The experiment will be started with zero weights on it. The reading on the ruler will be taken and then the 100g weight will be put on the hanger one weight at a time. Every time a weight is put on a hanger the extension of the spring will be measured in cm and converted to mm, because ...