algebra

The length a spring stretches is directly proportional to the force applied. If a force of 8 pounds stretches a spring 10 inches, how much force is necessary to stretch the same spring 9 inches?

asked by Anthony
  1. x = kF
    x/F is constant. You want F such that

    9/F = 10/8

    posted by Steve
  2. 10

    posted by Will

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