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The elevation of the end of the steel beam supported by a concrete floor is adjustedby means of the steelwedges E and F. The base plate CD has beenwelded to the lower flange of beam, andthe end reaction ofthe beam is known to be 150 kN. The coefficient of static friction is 0.30 between the two steel surfaces and0.60 between the steeland the concrete. If the horizontal motionof the beam is prevented by the force Q,determine (a) the force P required to raise the beam, (b) the corresponding force Q.

manoja sai , 11 Years ago
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