Investigating the Factors Which Will Affect the Stretching of a Helical Spring when Put Under a Load.

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Investigating the Factors Which Will Affect the Stretching of a Helical Spring when Put Under a Load.

Aim: To investigate and analyse the factors which will effect the

stretching of a Helical Spring when put under a load of weights.

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Theory:

Things, which might affect this, are:

· Downward force applied to the spring.

· Spring material.

· Length of spring.

· No. of coils in spring.

· Diameter of spring material.

· Cross sectional area of spring.

However, most of these do not come into play, apart from weight, as we

are using the same type of weights.

Hooke's Law:

* Hooke's law states that the extension of a spring (or other

stretch object) is directly proportional to the force acting on

it.

* This law is only true if the elastic limit of the object has not

been reached.

* If the elastic limit has been reached the object will not return

to its original shape and may eventually break.

If the experiment is correctly done, the law should show to be true.

Prediction: I predict that the greater the weight applied to the

spring, the further the spring will stretch. This is because extension

is proportional to load and so if load increases so does extension and

so stretching distance.

Equipment:

* 25swg Copper

* 26swg Nichrome

* 32swg Constantin

* 32swg Nichrome

* Stand

* Clamp

* Ruler

* Weights

* Hook

Method

Step 1: Collect all equipment

Step 2: Set-up as diagram below shows.

Step 3: Get a Copper wire, and using a cylindrical object (same size

all the time), wrap around to create a spring.

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