• 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

Investigating the stretching of a material

Extracts from this document...

Introduction

Investigating the stretching

of a material

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

Things, which might affect this, are:

· Downward force applied to spring and elastic band.

· Spring material.

· Length of spring and elastic band.

· Number of coils in spring.

· Diameter of spring band 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 the greater the force applied to the spring or elastic band, the further it will stretch. This is because extension is proportional to load and so if load increases so does extension and so stretching distance. I will also work out the extension which is done by taking away the extended length from the original length. In order to see if my prediction was correct, I will use Hooke’s Law. (-Robert Hooke (1635-1703), English scientist, best known for his study of elasticity. Hooke also made original contributions to many other fields of science.)

Middle

spring (all measurements in mm)

band (all measurements in mm)

Graphs:

PREDICTION: I predict the greater the force applied to the spring or elastic band, the further it will stretch. This is because extension is proportional to load and so if load increases so does extension and so stretching distance. I will also work out the extension which is done by taking away the extended length from the original length. In order to see if my prediction was correct, I will use Hooke’s Law. (-Robert Hooke (1635-1703), English scientist, best known for his study of elasticity. Hooke also made original contributions to many other fields of science.) He said that extension is proportional to the downward force acting on the band, and there will be a elastic limit where the band and the spring can’t take no more and will constantly drop and with the band it will actually break.

Detailed Method: My method of experimentation will be to use a clamp stand and boss clamp to suspend a spring from.

Conclusion

Results Table

spring  (all measurements in mm)

band (all measurements in mm)

These results are also plotted on a graph below.

The principle of Hooke’s Law can be seen in a graph of spring extension.

1. At this point the limit of proportionality has been reached this is where Hooke’s law is no longer accurate.

2. This point is the spring’s elastic limit if the force is removed from the spring it will no longer return to its original shape.

Beyond this point the atoms in the spring material begin to break their bonds until eventually the spring yields and breaks.

This shows that Hookes Law does have a limit as a spring does and does have limitations and if kept within these boundaries will provide reliable accurate results.

Mahmud Shahnawaz 11s-Science Ms welds-

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. Investigation on whether Rubber obeys Hooke's Rule

3 star(s)

The results will be recorded in a table. Diagram Preliminary Work A rubber band was placed between my hands and I carefully stretched it. As I stretched it, the rubber band grew in length and the length increased until my hands could not go any further and it did not break.

2. Find out what factors effect the stretching of a spring.

180 183 6 215 214 212 214 7 250 249 251 250 8 280 280 285 282 9 320 310 315 315 10 355 350 345 350 All measurements in mm These results are also plotted on a graph on the next page Now my graph is plotted I can work out the spring constant.

1. I am doing an investigation in to how much a metre rule bends when ...

Resources from: Physics For You - pages 114 and 74 The Internet - www.studentcentral.co.uk Analysis: From the evidence shown we can clearly see that as the load (N) is increased, the extension (cm) becomes greater. This is because the heavier the load, the more it wants to fall to the ground and thus the greater the extension.

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

take 10 extension measurements starting at 1N up to 10N of force on the spring. Results Table Force in N Test 1 Test 2 Test 3 Average 1 33 31 35 33 2 71 75 70 72 3 114 112 115 113 4 150 148 146 148 5 185 183

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

METHOD: Apparatus required: * Clamp stand * Spring, (2.1cm long and 1.5cm wide) * Weights, (5 individual 100g weights) * Weight holder * Stop clock * Ruler Once all the listed apparatus has been obtained and safety goggles have been put on, the apparatus should be set up as illustrated

2. Stretching Springs/Hookes Law.

go past its elastic limit because if they do they will not attract and go back to its original position because they have been damaged. There are forces acting on a spring, which one of them is downwards because the spring is being pulled upwards and as it bounces back up it is being pulled downwards.

1. Investigating Hooke's Law

In using the smaller length spring I am minimising the chance of error when I calculate the length of the spring. Also as part of my preliminary work I learnt that there was other things that affected the extension of a spring these were; > Material of the spring >

2. An Experiment To Examine the Effect of Springs In Parallel

I have found from a dictionary/encyclopaedia that a springy material gets its elasticity from the balance of attracting and repelling forces, which hold together the molecules. When a spring is at rest (not squeezed or stretched) the attracting and repelling forces between the molecules are exactly balanced.

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