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A cubic meter of some material has a mass of 6400 kg. The block of material is lowered into a lake by a strong cable until the block is completely submerged. Draw a free-body diagram for the block. (Do this on paper. Your instructor may ask you to turn in your work.)

Find the buoyant force on the block and the tension in the cable.
FB = N
T = N

  • Physics -

    weight in air = 6400 * 9.81

    volume of water displaced = 1 m^3
    weight of water displaced = 1000 *9.81 *1
    = 9810 N = force up from water

    tension = (6400 - 1000)(9.81)
    = 52,974 N

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