A Uniform 300-Kg Beam,6

question 37

Multiple Choice

A uniform 300-kg beam,6.00 m long,is freely pivoted at P,as shown in the figure.The beam is supported in a horizontal position by a light strut,5.00 m long,which is freely pivoted at Q and is loosely pinned to the beam at R.A load of mass is suspended from the end of the beam at S.A maximum compression of 23,000 N in the strut is permitted,due to safety.Under maximum load,find the magnitude of the x component of the force exerted on the beam by the pivot at P.

• A) 13,800 N
• B) 12,800 N
• C) 11,200 N
• D) 14,400 N
• E) 16,000 N

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