• 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

# strength of an uncooked spaghetti

Extracts from this document...

Introduction

LAB REPORT 18 – STRENGTH OF UNCOOKED SPAGHETTI

An investigation of a certain factor which affects the strength of uncooked spaghetti.

DESIGN

Aim: To investigate and determine the relationship between the length of uncooked spaghetti and the load applied to it reaching its [uncooked spaghetti’s] breaking point.

General background:

Regular wheat pastas i.e. pastas that need cooking for consumption can be made simply by mixing wheat flour with water, then extruding into pasta shapes and drying. The resulting pasta has good strength, with good cooked firmness and low cooking losses.

The strength of an object can be affected by various factors, such as: size, mass, temperature and many more. However, when it comes to the case of uncooked spaghetti, there are two main factors which affect the strength of uncooked spaghetti. These are: the length of uncooked spaghetti and the cross-sectional area of uncooked spaghetti.

In this experiment, I will investigate the effect the length of uncooked spaghetti has on its strength.

Hypothesis:

I predict that the longest piece of uncooked spaghetti will be more fragile and brittle compared to the shorter pieces of uncooked spaghetti. This means that the length of uncooked spaghetti will be inversely proportional to its strength i.e. the shorter the piece of uncooked spaghetti the stronger it would be and vice – versa.

Independent Variables:

The independent variable in this experiment was the known length of the piece of uncooked spaghetti.

Middle

Since the same type of spaghetti was used, the thickness i.e. the cross-sectional area of the spaghetti was kept constant hence, not affecting the readings obtained. The temperature at which all the experiments were conducted also remained constant in the room and this was made sure by constantly measuring the temperature of the room every 15 minutes and noting down the temperatures.

RESULTS

Data Collection:

Mass of the plastic container with string attached to it = 12 g = 0.012 kg

Table 1 below shows the different lengths of pieces of uncooked spaghetti used in the experiments and the volumes of water added to the plastic container serving as the load applied to the spaghetti pieces:

 Experiment: Length of Piece of Uncooked Spaghetti (± 0.05 cm): Volume of Water added to the plastic container (± 0.5 cm3): 1 23 25 2 20 28 3 17 33 4 14 40 5 11 51 6 08 70

Since, water has a density of 1 g cm-3, the values of the volumes of water obtained above serve as the same values for the mass of water used. This means:

Density = Mass / Volume

So, Mass = Density X Volume, and because the density of water is 1, Volume of water = the Mass of Water.

1 kg = 10 N

Using the above conversion, the load applied to the pieces of spaghetti was calculated.

For instance, experiment 1:   (25 ± 0.5 g) = (25 ± 2 %)

((25 ± 2 %) * 10) / 1000 = (0.25 ± 2 %) = (0.25 ± 0.005 N)

Conclusion

Evaluation:

The method and materials used for this experiment was pretty good, however some improvements could be made for a more accurate and correct result. The following are some of the errors which were experienced while conducting the experiment and improvements which could be made to overcome the errors:

• The water used in this experiment to fill the plastic container was collected from the tap and it might have occurred that there could be some impurities present in that water. Due to the presence of these impurities, the density of water might not have been 1 g cm-3 and hence, this might have affected the mass and load readings calculated using this density. Hence, it would have been appropriate if the density of the water collected was also collected before using the water in this experiment.
• Instead of filling the plastic container with water, another appropriate method could be the use of coins. Coins of known mass could have been used to fill the plastic container and then calculating the load which affects the strength of uncooked spaghetti.
• Further investigation on the strength of spaghetti could be done using different types of spaghettis i.e. spaghettis with different thicknesses meaning spaghettis comprising of different cross-sectional areas. This would help to investigate and determine the relationship between the strength of uncooked spaghetti and its cross-sectional area.

Bibliography:

The information included in the general background in the design section of this lab report on page 1 was obtained from the following web link:

• http://www.freepatentsonline.com/4435435.html, 09/01/09

This student written piece of work is one of many that can be found in our International Baccalaureate Physics 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 International Baccalaureate Physics essays

1. ## Investigate the factors affecting the period of a double string pendulum

Also my human reaction time and speed is also due to my perception of where a wave started and finished as I have bad eyesight I might have over counted or undercounted some waves. The factor that mainly affected my human reaction speed was also the independent factor of my

2. ## Suspension Bridges. this extended essay is an investigation to study the variation in tension ...

This was done for both the nylon string and the elastic band. However, the experiment has another important observation attached to it, that is, to study the variation in tension with differing lengths of strings. Thus, 4 different lengths of the string which were greater than the least distance between the two nails (138 cm)

1. ## Investigate the Strength of Straw.

At the same time we are also trying to change the position of molecules that are held together by the intermolecular bonds. With vary number of straws; its strength also will increase". Theory: Term such as strength, stiffness and toughness are used in a special way by physicists.

2. ## How does the number of holes in a plastic cup affect the time it ...

Ring Stand Procedure: 1. Obtain one paper cup and estimate the middle. Once the middle is found, use a screwdriver to puncture one hole into the cup. (If puncturing more than one hole, puncture the additional holes around the middle hole)

1. ## Factors affecting an electromagnet

wire makes on the nail, and the value of the current running through the wire increases, then obviously the value of the magnetic field will also increase. Due to the fact that they are both directly proportional strengthen this case.

2. ## Energy density experiment - Aim: To determine the energy density of ethanol

Uncertainty of average thermal energy: Amount of ethanol burnt (kg � 0.000005kg) Uncertainty of average energy of ethanol transferred (J) 0.0005 �1200 0.001 �1500 0.0015 �980 0.002 �2500 0.0025 �500 Processed Data Table: Table 7. Processed data of average thermal energy Amount of ethanol burnt (kg � 0.0000005kg)

1. ## HL Physics Revision Notes

Use A = λN and then λt½ = ln2 Topic 14: Digital Technology: Option G: Electromagnetic Waves: Outline the nature of electromagnetic (EM) waves. Oscillating electric charge produces varying electric and magnetic fields Electromagnetic waves are transverse, have the same speed Oscillating (SHM)

2. ## Researching water turbine designs.

Single regulated Kaplan allows a good adaptation to varying available flow but is less flexible in the case of important head variation. They can work between 30% and 100% of the maximum design discharge. The flow enters in a radial manner inward and makes a right angle turn before entering the runner in an axial direction.

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