If stretching a spring 3.50m causes a force of 20.0N, what is the spring constant of the spring? A. 5.71 N/m B. 70.O N/m C

Question

If stretching a spring 3.50m causes a force of 20.0N, what is the spring constant of the spring?
A. 5.71 N/m
B. 70.O N/m
C. 16.5 N/m
D. 23.5 N/m ​

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Diễm Kiều 4 years 2021-08-02T14:03:58+00:00 1 Answers 11 views 0

Answers ( )

  1. thanhcong
    0
    2021-08-02T14:05:57+00:00
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    Answer:

    A

    Explanation:

    Remark

    One of the handiest things to know in physics is something called dimensional analysis.

    Look at the answers you are given. All of them are in N/m. That means 2 things.

    No conversions are necessary

    You divide Newtons / meters. You don’t need to worry too much about a formula.

    But if need a formula, it is F = k * x and you need k

    x = 3.5 m

    F = 20.0 N

    k = F / x

    k = 20.0/3.5

    k = 5.71 to 3 places.

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