A weight W = 4000 lb falls through a height h = 0.5 in. onto the midpoint of a simple beam of length L = 10 ft (see figure).

Assuming that the allowable bending stress in the beam is σallow = 18,000 psi and E = 30 x 106 psi, select the lightest wide-flange beam listed in Table E-1a in Appendix E that will be satisfactory.

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W 4000 lb h0.5 in