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A bar (length 1 = 1 m) with a circular cross section and a slight taper (linearly varying from radius = 10 cm to

A bar (length 1 = 1 m) with a circular cross section and a slight taper (linearly varying from radius = 10 cm to r = 20 cm) is subjected to the compressive forces F = 50 N as shown in the figure. Determine the normal stress o for a cross section in the middle of the bar perpendicular to its axis. 1 F Fr(x) F

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