(20%) 5. An arm ABC lying in a horizontal plane and supported at A is made of two identical solid steel bars AB and BC welded together at a right angle. Each bar is 0.6 m long.
申論題內容
(a) Knowing that the maximum tensile stress (principal stress) at the top of the bar at
support A is due solely to the weights of the bars is 7.2 MPa, determine the
diameter d of the bars. (10%)
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