Lab 8 agnetism I Writeup Example实验8磁我写的例子.docVIP

** Disclaimer: This lab write-up is not to be copied, in whole or in part, unless a proper reference is made as to the source. (It is strongly recommended that you use this document only to generate ideas, or as a reference to explain complex physics necessary for completion of your work.) Copying of the contents of this web site and turning in the material as “original material” is plagiarism and will result in serious consequences as determined by your instructor. These consequences may include a failing grade for the particular lab write-up or a failing grade for the entire semester, at the discretion of your instructor. ** Magnetism I PES 215 Report Objective The purpose of this lab was to determine how the magnetic field of a permanent magnet is related to distance. Data and Calculations Part A – Canceling Out the Earth’s (and other) Magnetic Field: Since the Earth has a permanent Magnetic Field set up around it, we needed to cancel out this magnetic field strength to only capture the magnitude and direction of the magnet pair we were trying to measure. Figure 1: Magnetic Field of the Earth (Above Image Available Online at: /faculty/acolvil/plates/magnetic_field.jpg) We know that the Earth’s Magnetic field is about ? a micro-Tesla, which is sufficiently large enough to be measured by the magnetic field sensor we were using during the lab. We zeroed out the magnetic field sensor before taking any measurements to ensure that the Earth’s Magnetic field would not superimpose with the magnet’s field (giving us an erroneous measure of the dropoff as a function of distance). Part B: Capturing the Field Strength vs. Distance for the Magnets: The following figure shows the setup of the experiment. We used a magnetic field sensor (which was pointing toward the south end of the permanent magnet pair), a ruler divided into centimeters and the two permanent magnets connected across a piece of paper (which indicated the center of mass line for the two magnets). Figure 2: