A hardened steel beam is 25 in. long with simple supports. An 80-lb weight drops 4 in. and strikes the beam at the center. Find the value of the bending stress for the following conditions. Ignore Wb in the calculations.
(a) The beam is 1/2 × 2 in. set on edge.
(b) The beam is 1 × 1 in.
(c) The beam is 1/2 × 2 in. laid on the flat.
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