lab2 4 - Winter Quar ter 2009 0/35 Experiment: M agnetic...

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0 /35 Winter Quarter 2009 Winter Quarter 2009 Experiment: Magnetic Moments Your name: Cory Poynter Partner: Performed on: 3/13/2009 TA: Section number: Promptness % (100 means it was on time): 100 Additional Scores (+) /Penalties (-): Please insert your material in the space between or after the red or yellow boxes, not in the boxes themselves. Abstract (4) The purpose of this experiment was to investigate the interaction of a magnetic dipole moment with an external magnetic field and find the moment of a permanent magnet statically by balancing the gravitational torque with magnetic torque and finally find the magnetic moment dynamically by measuring the period of oscillation caused by a restoring magnetic torque. First we were to measure and record the mass, thickness, length and the diameter of the objects that are being used in the experiment. Next you are to place the plastic weight on the tube as far out as it will go and measure this distance with the calipers as z (cm) and I (amps) and then record theses values. Next you are to make sure the two VOLTAGE knobs of the Leader power supply are full clockwise (CW) and the current knobs are full counterclockwise (CCW). Afterwards you are to place the ball in the air bearing. Note that when you turn on the air, there has to be air flow around the seated part of the ball so it can move freely. Next the air is to be turned on and adjust the magnet current from the Leader power supply so that the rod is horizontal (parallel to the table top). After this is found the current in the table is to be recorded along with the value for z. Next you are to set and record the distance z in cm for each of the following values: 9.00, 8.00, 7.00, 6.00, 5.00, 4.00, 3.00,
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3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 O P I (amps) time 25 (s) 4.00 30.17 9.00 19.61 8.00 20.93 7.50 21.60 7.00 22.38 6.50 23.34 6.00 24.25 5.50 25.19 5.00 26.41 4.50 28.31 3.50 32.21 3.00 35.00 2.80 36.52 2.60 37.60 2.40 39.33 2.20 40.84 2.00 43.51 1.00 64.47 4 5 6 7 8 9 10 11 12 13 14 L M trial time 25 (s) 1 30.06 2 31.20 3 30.14 4 30.40 5 30.12 6 29.95 7 29.79 8 30.12 9 30.10 10 29.81 11 12 13 14 15
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lab2 4 - Winter Quar ter 2009 0/35 Experiment: M agnetic...

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