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30 January, 23:38

Hooke's Law says that the force exerted by the spring in a spring scale varies directly with the distance that the spring is stretched. If a 32 pound mass suspended on a spring scale stretches the spring 11 inches, how far will a 43 pound mass stretch the spring? (Round off your answer to 1 decimal place.)

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Answers (2)
  1. 30 January, 23:45
    0
    14.776 inches

    Step-by-step explanation:

    32 pound mass stretches the spring by 11 inches,

    where F = ke where k is a constant and e is the extension

    32/11 = k

    k = 2.91

    then 43 pound will stretch it by

    f = ke

    43 / 2.91 = e in inches

    e = 14.776 inches
  2. 31 January, 01:22
    0
    Answer:the spring would be stretched 14.8 inches.

    Step-by-step explanation:

    Hooke's Law says that the force exerted by the spring in a spring scale varies directly with the distance that the spring is stretched.

    If the force is F and the distance that the spring is stretched is e, then

    F is directly proportional to e

    Introducing a proportionality constant, k it becomes.

    F = ke

    If a 32 pound mass suspended on a spring scale stretches the spring 11 inches, it means that

    32 = k * 11

    k = 32/11

    The expression becomes

    F = 32e/11

    If a 43 pound mass spring is stretched, then,

    43 = 32e/11

    32e = 43 * 11 = 473

    e = 473/32 = 14.8 inches
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