determine the vertical reactions at each of the four outriggers as a function of the boom angle

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The mobile crane is symmetrically supported by two
outriggers at A and two at B in order to relieve the
suspension of the truck upon which it rests and to provide
greater stability. If the crane boom and truck have a mass of
18 Mg and center of mass at G1, and the boom has a mass
of 1.8 Mg and a center of mass at G2, determine the vertical
reactions at each of the four outriggers as a function of the
boom angle u when the boom is supporting a load having a
mass of 1.2 Mg. Plot the results measured from u = 0° to the
critical angle where tipping starts to occur.

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