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Consider the classic example of a circular hole in a rectangular plate of constant thickness. The thickness of the plate is .1 min., the diameter of the hole is .5 in.1 m, , the length of the plate is 10 in. and the width of the plate 1 m5 in., as the figure below indicates.

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Determine the maximum normal stress of the plate when a constant pressure of 50 MPa is applied as shown.

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