In: Physics
Name at least two sources of systematic error and explicitly describe how you could improve the experiment to obtain a better measurement of Y in Young's Modulus lab.
Systematic errors are instrumental, methodological, or personal mistakes causing "lopsided" data, which is consistently deviated in one direction from the true value.
One can use a fiducial marker such as some tape can be used to help identify the original and extended lengths. Making multiple measurements with a variety of masses will increase the number of points on the stress-strain plot and make the calculation of Young's modulus more reliable. Another thing to take care of is measuring the cross-sectional area of the wire. Imperfections of the wire may mean that the diameter is not perfectly constant along its length, so taking the mean of several readings with the micrometer could help.