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7 September, 10:13

A brick weighs 26 N. Measured underwater, it weighs 11 N. What is the amount of buoyant force exerted by the water on the brick?

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  1. 7 September, 10:18
    0
    Buoyant force is equal to upthrust therefore

    Upthrust = weight of brick in air - weight of brick in water

    Upthrust = 26 - 11

    Upthrust = 15N

    It's S. I unit is Newton (N) because it is a force
  2. 7 September, 10:20
    0
    Buoyant force = weight - apparent weight = 26 - 11 = 15N
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