Hooke's Law

Introduction:

I am trying to find out what factors effect the stretching of a spring.

Factors which might affect the spring are:

· Downward force applied to spring.

· Spring material.

· Length of spring.

· No. of coils in spring.

· Diameter of spring material.

· Cross sectional area of spring.

I have chosen to look at the effect of the weight applied, as it is a continuous variation.

Prediction:

I predict that the more weight applied to the spring, the further the spring will extend. This is because when the load increases so does extension and stretching distance.

to find out how much something has been extended there is a little formula:

New size - Original size.

To prove that my prediction is correct I will experiment, and collect results using Hookes Law. He found that extension is proportional to the downward force acting on the spring.

Hookes Law

F= ke

F = Force in Newtons

k = Spring constant

e = Extension in Meters

Equipment list:

Boss clamp

metre rule

3 springs (different sizes)

0 weights (each 1N each)

Safety:

There are very few potential dangers whilst performing this investigation. The spring could snap and the stand could fall. To prevent these factors from dangers I shall wear goggles and make sure the stand is supported on both sides.
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Fair test:

To make sure that I will get the most accurate results possible I will have to make this a fair test. Things that I shall carry out to make it fair it to keep the 1 metre rule in the same position. I shall also not touch the spring, this could add extra weight that could make the whole investigation unfair.

Method:

The method of experimentation I will be following is to use a clamp stand and boss clamp to suspend a spring from. A second boss clamp will hold in place ...

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