Physics, 04.12.2020 16:30 goobert

A disc magnet is used to hold a piece of paper (0.1 mm thick) to the steel door of a refrigerator. The magnet is 6 cm in diameter and 0.75 cm thick. Its mass is 500 grams. Assuming that the coefficient of friction between the paper and the refrigerator is 0.3, what is the minimum remanent magnetism that the magnet must have in order to keep the magnet and paper from falling

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A disc magnet is used to hold a piece of paper (0.1 mm thick) to the steel door of a refrigerator. T...