The uniform beam AB in Figure 12.39 has a mass of 900 lbm. gL = 32.174 0 ft/s².

(a) For a force F of 1 200 lbf, construct a table listing the reactions at A and B if x varies from 0 to 32 ft in increments of 4 ft.
(b) Determine the value of F that makes the reaction at A 75% of the reaction at B when x = 13 ft.


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