S NN SN SS NS NS NN SN SN SS NPart 1: Refrigerator MagnetsPart 3: Current Carrying Solenoid & Bar MagnetExperimental SetupAnalysisPhy 103 Fundamentals of Physics III 1Instructor: Tony ZableExperiment: The Magnets & Magnetic FieldsObjective: To investigate the magnetic field of various magnets.Equipment: - Computer and LabPro Interface- LoggerPro Software- Magnetic Field Sensor- a table clamp or tape- 2 refrigerator magnets- 2 bar magnets- Meter stick- compass- Solenoid- DC power supply & connecting wiresFile name: Ph103_Lab6-Magnetism.docPart 1: Refrigerator MagnetsTake the two refrigerator magnets and rub their magnetic strips against each other with the arrows facing up and you rubbing sideways. What do you feel as you rubbed the magnets back and forth? Do they stick together?Now with the arrows still facing up, rub up and down. What do you feel now? Do they stick together?With one arrow facing up and the other down, what does it feel like when you rub both magnets:back and forth? Do they stick together?When you rub them up and down?Now face the magnets against each other such that the logos are facing each other. Rotate or move the magnets against each other in situations as you did above. What do you feel? Do they stick to each other?Part 2: Bar MagnetsTake 2 bar magnets. Orient the magnets so that the same poles are directed toward eachother. Move the magnets, pole to pole, toward each other then away several times. Whatdo you observe?Now, flip both magnets around so that their opposite pole now faces each other. Move the magnets, pole to pole, toward each other then away several times. Record your observations.Flip around one of the magnets so that like poles are facing each other. Move the magnets, pole to pole, toward each other then away several times. What do you observe?Now, flip both magnets around so that the opposite like poles now face each other. Movethe magnets, toward each other then away several times. Record your observations.How does separation distance affect the magnetic forces of attraction and repulsion between the magnetic poles?N SS NS NN SS NS NN SN SPart 3: Current Carrying Solenoid & Bar Magnet1. Set-up the simple solenoid circuit shown below:2. Using a compass, observe the direction magnetic field in and around the solenoid. Sketch your observations.3. Using a bar magnet with the pole facing one end of solenoid, move the bar magnetic toward the solenoid. Record your observations.4. With the same pole of the bar magnet facing the opposing end of the solenoid, move the magnet toward the solenoid. Record your observations.5. How might changing the current in the solenoid affect your above results?6. Try it! Adjust the dial of the power supply to alter the electric current through the solenoid. How do your predictions in (5) agree with your observations?solenoidpower supply+-N SS NPart 4: Looking Along the Axis of a Bar MagnetOn the bar magnet, you will notice a notation of N for North and S for South. North represents the magnetic field radiating outward and South represents the magnetic field radiating inward. NS axisA. Take a compass and place it over one of the bar magnets. i. What is the orientation of the needle as you pass it over the length of the magnet? Draw arrows to represent the orientation of the compass needle. NSii. Now do this same procedure for the second bar magnet.NSiii. Was there any difference in the orientation of the magnetic field in the two bar magnets? Why or why not?B. For now we are going to continue to look along the axis of the magnet. Place the compass at the N pole end of the magnet and move away from it. i. In which direction is the magnetic field of the bar magnet as you move along the axis? ii. Does the orientation of the needle change at any time? iii. How would the intensity of magnetic field change along the axis of the bar magnet as you move away from the magnet? Can you measure this with the compass?iv. Place the compass at the S pole end of the magnet and move away from it. In which direction is the magnetic field of the bar magnet as you move along the axis?v. Does the orientation of the needle change at any time? Part 5: SummaryWrite a paragraph summarizing this lab experience.Part 6: Measuring the magnetic field of a bar magnet (Time Permitting!)Experimental Setup1. Insert the plug of the magnetic field sensor into CH 1 and set the sensitivity to “x10”. Turn on the LabPro and then the computer. Open the network folder I:/HOME/Science/Physics/Zable/Phy103/ 2. Open the experiment file called Phy103-Lab6_Magnetism. A graph should now show up on your screen with a zero button on the upper right hand corner of the application. This button is used to cancel or zero out the magnetic field.3. Secure a meter stick to the table using a clamp or tape to prevent movement (be sure not to cover the readable portion of the stick). Place the magnetic sensor near the meter stick (with the white dot face aligned parallel to the tabletop). Be sure there are no magnets near the sensor and then press the zero button. This is to adjust for any external magnetic fields (to make them zero). Place the bar magnet near the sensor so that it just barely touches it.4. When you look at the magnetic field sensor, you see it enclosed in an elongated tube with a white box or dot at one end of the tube. The location of the white box or dot is where the sensor has maximum sensitivity. Change the orientation of the sensor (to the magnet) to see how the sensitivity of the sensor changes. Be sure to change it back to position when you are done.5. Click on the start button and then start moving the encoder away from the magnet. Press “Keep” to take a reading. Enter the distance away from the sensor then press ENTER. Record the position and magnetic field value ion the table below.6. Move the magnetic a small distance away from the sensor then take another reading. 7. Repeat measurement for at least 7 trials.Data Table 1: {Bar Magnet}Trial # Position(m)Magnetic Field (mT){North End}Magnetic Field (mT){South End}Analysis1. Open Graphical Analysis software.2. Enter the data from Table 1 and view the graph. What is the general shape of yourgraph?3. Using the Automatic Curve Fit, choose a power fit to obtain a “best-fit” for your graph. If necessary, add an offset value (call it “C”) to the fit equation.4. What does the graph look like? Is it like the one you