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28 February, 05:16

A block of wood weighing 25 N is subrnerged under water. If the net force on the wood is 5 N upward, how much buoyant force is acting on the wood?

A) 30 N upward

B) 20 N upward

C) 5 N upward

D) 25 N downward

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Answers (1)
  1. 28 February, 05:20
    0
    A) 30 N upward

    Explanation:

    There are two forces on the block: buoyant force up and weight down. The net force is 5 N up, so:

    5 N = B - W

    The weight is 25 N so:

    5 N = B - 25 N

    B = 30 N

    The buoyant force is 30 N up.
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