{"id":1290,"date":"2022-05-05T15:00:36","date_gmt":"2022-06-25T11:25:53","guid":{"rendered":"https:\/\/experiments.school\/?post_type=product&p=1290"},"modified":"2022-07-01T10:37:55","modified_gmt":"2022-07-01T08:37:55","slug":"028-load-capacity-of-a-bar-magnet","status":"publish","type":"product","link":"https:\/\/experiments.school\/en\/product\/028-load-capacity-of-a-bar-magnet\/","title":{"rendered":"028 – Load capacity of a bar magnet"},"content":{"rendered":"","protected":false},"excerpt":{"rendered":"

Field strength of a bar magnet\u00a0<\/span><\/span><\/strong><\/h2>\n

Introduction to<\/span>:\u00a0<\/span>\u00a0<\/span><\/h2>\n

Field strength, magnetic field, field lines\u00a0<\/span><\/p>\n[video width=\"1920\" height=\"1080\" mp4=\"https:\/\/experiments.school\/wp-content\/uploads\/2022\/05\/028-video-1.mp4\"][\/video]\n

Material:\u00a0<\/span>\u00a0<\/span><\/h2>\n
    \n
  • Bar magnet\u00a0<\/span>\u00a0<\/span><\/li>\n
  • Screws (ferromagnetic, ferrous) \/ iron or steel nails with heads (length 2-3 cm) \/ paper clips.\u00a0<\/span>\u00a0<\/span><\/li>\n<\/ul>\n

    Setup and execution:\u00a0<\/span>\u00a0<\/span><\/h2>\n
      \n
    • Put one screw after the other on the magnet hanging freely until the last one does not hold anymore.\u00a0\u00a0<\/span>\u00a0<\/span><\/li>\n
    • Test the magnet’s load-bearing capacity at various points of the magnet, especially at the poles and in the middle.\u00a0<\/span>\u00a0<\/span><\/li>\n
    • Slide the chain of screws from the poles to the center.\u00a0<\/span>\u00a0<\/span><\/li>\n<\/ul>\n

      Observation:\u00a0<\/span>\u00a0<\/span><\/h2>\n
        \n
      • \u00a0\u00a0\u00a0 The poles can hold up the most screws.\u00a0<\/span>\u00a0<\/span><\/li>\n
      • \u00a0\u00a0\u00a0 The screws can \u201cconduct\u201d the magnetic effect.\u00a0<\/span>\u00a0<\/span><\/li>\n
      • \u00a0\u00a0\u00a0 As you move the screws towards the center, they drop off one by one.\u00a0<\/span>\u00a0<\/span><\/li>\n<\/ul>\n

        Tip:\u00a0<\/span>\u00a0<\/span><\/h2>\n

        Do not place screws too close together or they will attract each other.\u00a0<\/span>\u00a0<\/span><\/p>\n

        Explanation:\u00a0<\/span>\u00a0<\/span><\/h2>\n
          \n
        • The magnetic field, as well as the gradient of the magnetic field, are strongest at the poles. <\/span><\/li>\n
        • The screws are magnetized as a result. <\/span><\/li>\n
        • In the center, the field lines run perpendicular to the screws and thus attract them very weakly.\u00a0<\/span><\/li>\n<\/ul>\n

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