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3 October, 18:41

A pneumatic device produces 35 psi of pressure when a force of 20 pounds is applied. What is the diameter of the cylinder?

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  1. 3 October, 19:19
    0
    0.85 inch

    Explanation:

    pressure = force/area

    35 psi = (20 lb) / A

    A = (20 lb) / (35 lb/in^2)

    A = 4/7 in^2

    The area of the cylinder is 4/7 in^2.

    area of circle = pi * r^2

    pi * r^2 = 4/7 in^2

    r^2 = 4 / (7*pi) in^2

    r = sqrt[4 / (7*pi) in^2]

    r = 0.4265 inch

    d = 2r = 0.85 inch
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