An early submersible craft for deep-sea exploration was raised and lowered by a cable from a ship. When the craft was stationary, the tensio

Question

An early submersible craft for deep-sea exploration was raised and lowered by a cable from a ship. When the craft was stationary, the tension in the cable was 6500 N. When the craft was lowered or raised at a steady rate, the motion through the water added an 1800 N drag force. Part A

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Kim Chi 7 months 2021-07-27T15:19:00+00:00 1 Answers 2 views 0

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    2021-07-27T15:20:40+00:00

    Answer:

    The tension in the cable when the craft was being lowered to the seafloor is 4700 N.

    Explanation:

    Given that,

    When the craft was stationary, the tension in the cable was 6500 N.

    When the craft was lowered or raised at a steady rate, the motion through the water added an 1800 N.

    The drag force of 1800 N will act in the upward direction. As it was lowered or raised at a steady rate, so its acceleration is 0. As a result, net force is 0. So,

    T + F = W

    Here, T is tension

    F = 1800 N

    W = 6500 N

    Tension becomes :

    T=W-F\\\\T=6500-1800\\\\T=4700\ N

    So, the tension in the cable when the craft was being lowered to the seafloor is 4700 N.

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