Hypothesis through research Essay

Introduction This investigation aims to find the place of teens Modulus for a specific material, in this case nylon fishing line. Youngs Modulus (E) is a measure of a materials stiffness, determined by the formula The standard unit of measure for Youngs Modulus is the papa (Pa). 1 pascal is the same measure as 1 Nm-2 (Nm being Newton Metre). A material always retains the same Youngs Modulus hold dear regardless of how much it is stretched or strained, and this should be revealed in this investigation by gathering a definite value of the modulus for nylon.Hypothesis Through research that I conducted before starting the investigation, I have determined that the correct Youngs Modulus value of Nylon lies in the range 1-7GPa (the large range being overdue to different make-ups of Nylon with it being a compound). I should therefore be looking at achieving a final result within or very tightly fitting to this range. Since stress is proportionate to strain in the Youngs Modulus formul a, and the modulus value remains the same, I would expect the value of stress and strain to proportionally append with each other.Experiment Plan In order to carry fall out this investigation into the value of Youngs Modulus of nylon, I leave behind conduct an try out to gather the values of stress and strain when increasing force is numbered to the material, and will take readings as weighter from Decatur increases until the breaking heyday of the nylon is reached. In order to elaborate stress and strain, I will need to record each of the following variables throughout the taste Force applied to the material F (Newtons/N) Area of a crosswise of the material A (Metres-squared/m2).Original length of the material Lo (Metres/m) Amount of extension when the force is applied L (Metres/m) These variables will then allow the values of stress and strain to be calculated using the following formulas This leads to a final Youngs Modulus calculation formula of The set-up I will be usi ng to carry out this experiment consists of the nylon fishing line suspended from a stand using a clamp, and another clamp to ensure there is no movement in the stand itself.I will create a suitable loop at the bottom of the hanging material so that weights can be added just will need to ensure this loop does not weaken any area of the material and cause a drop in the breaking point value, as this would compromise the reliability of my experiment and result in premature breakage of the length of nylon. At each stage of the experiment I will take readings of length using a standard 1m ruler, and will measure the area of a cross section by gathering the diameter value using a micrometer, halving this value to gather radius and then use the formula.Before any weights are added, I will need to take a control measurement of the length and area of the nylon before any stress or strain is applied. Once this is done I will proceed to founder weight in intervals of 100g (0. 981 N) and reco rd the values of each variable stated at bottom of the previous page after each 100g weight is added, with the elision of original length which is a constant value and only needs to be recorded at the beginning of the experiment. I will continue to add weights until the material reaches its elastic limit and snaps, at which point I will record the force applied to break the object.In order to achieve an passable number of results from each experiment to make a fair analysis and conclusion to the investigation, I will need to take a minimum of eight readings (i. e the nylon should withstand at least 800g/7. 849N). If this fails in the actual experiment then I will need to re-evaluate my plan and decide on a new method of conducting the experiment to meet this criteria. To increase reliability, accuracy and to eliminate possible anomalous results, I will aim to repeat the entire experiment three times to gather average readings.