Mat A = 0 ( + ve ) ( 175 lb ) ( 1.0 ft ) + ( 350 lb ) ( 3.0 ft ) + ( 300 lb ) ( 4.0 ft ) - ( F sin60 ) ( 2.0 ft ) = 0 175 lb.ft + 1,050 lb.ft + 1,200 lb.ft ...
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