Problem 338
The two 12-ft beams shown in Fig. 3-16 are to be moved horizontally with respect to each other and load P shifted to a new position on CD so that all three reactions are equal. How far apart will R2 and R3 then be? How far will P be from D?



Solution 338


In reply to by Jerrie Vy Subaldo

It is what the problem requires.

... all three reactions are equal

If you place Rc at the midspan of AB, the reactions at A and B will be equal to 0.5Rc. Because the problem requires that all three reactions are equal, it should follow that R3 = 0.5Rc.

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