A Nonprismatic Cantilever Bar Has an Internal Cylindrical Hole of Diameter

question 63

Short Answer

A nonprismatic cantilever bar has an internal cylindrical hole of diameter $d / 2$ /2 from 0 to x, so the net area of the cross section for Segment 1 $(3 / 4) A$ . Load P is applied at x, and load $-P / 2$ is applied at x = L.
Assume that E is constant. The length of the hollow segment, x, required
To obtain axial displacement $\delta=P L / E A$ at the free end is: (A) $x=L / 5$
(B) $x=L / 4$
(C) $x=L / 3$
(D) $x=3 L / 5$

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