• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

The Factors Affecting the Deflection of a Spaghetti Bridge

Extracts from this document...

Introduction

The Factors Affecting the Deflection of a Spaghetti Bridge An Investigation into the Factors Affecting the Deflection of a Spaghetti Bridge - Planning * Preliminary Work I have decided to investigate how different masses affect the deflection of a spaghetti bridge. We have been given a selection of different types of spaghetti. To find the type that will give me the largest range of results I need to test each type to find the one with the largest breaking force. To do this I held the spaghetti in two clamp stands (one at each end of the strand) and then applied a mass to the centre of the spaghetti. Starting at 10g and increasing the mass by 10g each time. Each type of spaghetti was cut to the same length of 20cm. I found that the "Waitrose Italian Spaghetti" had the largest breaking force of approximately 90g. I predict that the deflection of the spaghetti bridge will increase proportionally to the mass applied. I believe this because spaghetti is an elastic material (it will return to its original shape when a force is applied) ...read more.

Middle

I will also vary the length (20cm, 15cm and 10cm) to see if different lengths give me more or less accurate readings to use in this investigation. Analysing Evidence I have discovered that as the mass hanging from the centre of the spaghetti bridge increases so does the deflection. If the mass doubles the deflection doubles, therefore the deflection is directly proportional to the mass hanging from the centre of the spaghetti bridge. At a point the deflection stops being proportional to the mass because too much mass is stretching the spaghetti. Therefore I can conclude that the spaghetti bridge behaves according to Hooke's law (deflection is directly proportional to the mass) until the elastic limit is reached. The elastic limit for the spaghetti seems to be inconsistent with the length. The 20cm long spaghetti has an average elastic limit of 33g and the 15cm long spaghetti has an average elastic limit of 27g however the 10cm long spaghetti has an average elastic limit of 47g. This does not seem to be a regular pattern - I would have to carry out further investigation to see if any of the results were anomalous or if a pattern could be established. ...read more.

Conclusion

I believe that the experiment was designed well but there were a few problems. Reading the deflection off the metre rule was cumbersome and I was not always sure if it had been read correctly. It was also difficult to keep the hanging mass in the middle of the spaghetti bridge since it kept moving. To prevent this in future I would attach the mass to the spaghetti using cotton thread tied tightly so it would not move. To improve the experiment I would find a more accurate way of measuring the deflection. Since using a millimetre marked ruler was cumbersome and the spaghetti was more than 1mm thick therefore it was difficult to decide where to measure the deflection from. I would also find a way of preventing the ruler and hanging mass from interfering with each other since they got in each others way during the investigation. Additional work, which could be carried out, is to repeat the experiment using, a wider range of lengths of spaghetti. The investigation could also be extended to investigate other factors affecting the deflection such as number of strands of spaghetti, thickness of spaghetti or type of spaghetti. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our GCSE Classifying Materials 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

See related essaysSee related essays

Related GCSE Classifying Materials essays

  1. Cantilever Deflection.

    You can also realise, by observing the graph, that if the mass on the ruler was increased from 0.2kg to 0.4kg, the ruler would deflect by double the amount that is placed on it, therefore it would deflect from, 10mm to 20mm.

  2. Investigating the Factors Affecting the Temperature Change Between Zinc and Copper Sulphate

    heat energy). This is due to more bonds being formed than broken, as illustrated below: Cu - Cu Zn - Zn atoms atoms This is an endothermic reaction because energy is put in so the bonds can be broken. The bonds that are formed are: Zn - SO4 Cu -

  1. Chemistry Coursework. Aim: To find out if the thickness of plastic bags is ...

    which is used to make useful chemicals. The hydrocarbon is then broken down in to smaller molecules using a catalyst, this is called Catalytic Cracking, and is an example of a thermal decomposition reaction. You are then left with ethene/ethylene, which is an alkane because all of the Carbon atoms are joined together by single bonds.

  2. THE RE-HYDRATION OF SPAGHETTI Lab Report

    Begin with boiling it for 4 minutes, and so on as shown in the example table above. 7. Once the boiling time for that test is over, carefully pour the hot water and boiled spaghetti into a sieve/ metal filter which is then placed into a sink to allow the water to drain.

  1. factors affecting the errosion of a magnesium statue

    The H+ ions are also bombarding the magnesium ions. The amount of collisions is high as the concentration of acid is high. This is also a proportional reaction My method was a reliable way of doing the investigation. I could have, however obtained more accurate results by using a "gas syringe".

  2. The role of mass customization and postponement in global logistics

    * in time the market may embrace MC as consumers became more experienced and knowledgeable in financial matters, or embrace other criteria than costs (e.g. ethical investments based on personal attitudes and beliefs). * MC makes it difficult for customers to do comparative shopping, especially if they are deploying automated Internet robots.

  1. An experiment to investigate the factors that determine the amount of energy released when ...

    This reaction requires energy to break the bonds within the alcohol and oxygen molecules and gives out energy when it forms new bonds within the carbon dioxide and water molecules. Different bonds between different pairs of atoms require different amounts of energy to be broken and give out the same energy when formed as required when broken.

  2. Factors affecting the period of a Pendulum.

    for one oscillation, s can be replaced with p so we get kL/p2, and we can expand this to get p2 = kL, this can be written as p is proportional to the square root of l. Or P2 ??L.

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