• Join over 1.2 million students every month
• Accelerate your learning by 29%
• Unlimited access from just £6.99 per month
Page
1. 1
1
2. 2
2
3. 3
3
4. 4
4
5. 5
5
6. 6
6
7. 7
7
8. 8
8

# Spring Investigation

Extracts from this document...

Introduction

Spring Investigation Aim The aim is to find out the factors that affect the stretching of a spring. Prediction From Hooke's law we know that as long as loads are not used which would cause the spring to approach its elastic limit the extension of a spring is proportional to the load acting on it. This equation: extension =Y x (original length) x load cross-sectional area states that if we increase the cross-sectional area and keep the same original length, the extension will be less with any given load. I will apply this knowledge that the thinner the wire the more it will extend with the same load than a thicker wire would. I think this because the theoretical equation along with Hookes law state that this is what would happen. Here is an example of what the results should look like. Trial run For the trial run I decided to use a diameter of 10mm for the coil and to use 100g masses. This did not work as the springs with a 36swg, 32swg, and 28swg just went straight to the floor. On the basis of what I have tried out I decided to use a 5mm diameter for the coil and 10g masses. Method .Set up equipment as shown in diagram. .Make five Nichrome springs with a 20swg, 24swg, 28swg, 32swg and 36swg all with hooks at each end. ...read more.

Middle

Apparatus * Clamp stand: To hold the spring and the metre stick. * Metre stick: To record the results. * 5 springs: To carry out the investigation with. * 10g masses: To extend the springs. Plan of action First of all we set up the equipment as shown in the diagram, then we made the springs by wrapping all of the five different widths of Nichrome wire round a core of five millimetres each with a hook at both ends. Starting with the 20swg we hooked it onto the clamp stand and lined the metre stick up with the bottom of the spring at 200 millimetres so it would be easier to record the results. Once we had done all the above we started to add on the 10g masses one by one until the spring went past the elastic region. We did this with each wire recording the extension to the nearest millimetre every time a 10g mass was added. Fair test To make this a fair test I will ensure that each gauge of wire is a metre long, that I record the results to the nearest millimetre and that I use the same diameter for each spring. Swg Newtons (N) Reading (mm) Total extension (cm) 36 0 0.1 0.2 Went past the elastic limit 200 905 962 0 705 762 32 0 0.1 0.2 0.3 Went past the elastic limit 200 278 410 505 0 78 ...read more.

Conclusion

To get a better set of results I could have made the test a lot more fair, for example: extra length for the hook, measure the extension of the spring with an object instead of by eye, even up the coils on each spring taking care that there are no gaps. To extend this particular investigation I could repeat the experiment with a variety of metals. The different metals would probably have a different extension with the same weight. A use of this would be that different metals would be more suitable for different tasks whether as individual components or as part of a working machine. Conclusion I have concluded that the thickness of the wire does affect the stretching of a spring. Therefore the thicker the wire the larger the mass has to be for it to extend then a thinner wire. Diagrams The diagrams above show the stretching of a spring when in the elastic region. The molecules slip and slide over each other as the weight is applied, this causes the spring to extend. As the weights are taken off the molecules slide back to their original position. However when the spring enters the plastic region by an increase in the load it produces a much bigger extension then before. This causes internal slipping to take place between the layers of atoms and is called plastic deformation. The spring will not return to its original position. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our AS and A Level Waves & Cosmology section.

## Found what you're looking for?

• Start learning 29% faster today
• 150,000+ documents available
• Just £6.99 a month

Not the one? Search for your essay title...
• Join over 1.2 million students every month
• Accelerate your learning by 29%
• Unlimited access from just £6.99 per month

# Related AS and A Level Waves & Cosmology essays

1. ## Find out what factors effect the stretching of a spring.

the sum I need for gradient is Gradient = 0.35 - 0.072 10 - 2 Gradient = 0.278 = 0.03475 8 The gradient is 0.03475 to convert to spring constant I need to use the following formulas: y=mx+c <THORN> e = mf <THORN> e = f m Hookes Law F=ke

2. ## The aim of this investigation is to examine the effect on the spring constant ...

applied multiplied by the inverse of the systems spring constant plus another constant. The constant (c) is the weight of the spring itself, as the springs used in the experiments only weigh a matter of grams however, this is approximated to 0.

1. ## Hooke's Law / Young's Modulus - trying to find out what factors effect the ...

As molecules are pushed together, the larger the push the stronger the resistance. 2. At this point Hooke�s law of proportionality can be applied. 3. At this stage the effect of force becomes less until the spring yields and separates (breaks).

2. ## Physics Investigation on Hook's Law.

The key factors in my experiment are the weights and the spring. To get accurate results, I have to control these factors by putting on the weights gently on to the spring. Also not to vary the Newton weights, by adding them proportionally.

1. ## What factors affect the period of a Baby Bouncer?

However, the extension proved to be too great, making it harder to measure each oscillation and increasing the space required for the experiment. I wanted to experiment to be as confined as possible, which would allow others more space to operate and give myself less space to look after.

2. ## Stretching Springs/Hookes Law.

which will not be a fair test -I will measure at the bottom of the spring each time at the same point to make it a fair test. -I will then add the next mass and put it on carefully when it isn't swinging to make it a fair test

1. ## Investigating Hooke's Law into thin wires.

On Fig 1.6 all the results for Extension 3 are wrong. Again the only explanation is inaccuracy in measuring. For all the results that are given they are to the nearest 10mm because it was difficult to measure the wire.

2. ## An investigation into the stretching of materials

it will not however change the shape of the graph, just the size of the curve. � There will be a point where the line within the line graph ceases to follow its original path, this point will be called the elastic limit and all materials stretched beyond it will

• Over 160,000 pieces
of student written work
• Annotated by
experienced teachers
• Ideas and feedback to
improve your own work