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Force F=80i+50j-60k passes through a point A(6,2,6). Compute its moment about a point B(8,1,4).
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ˉF=80ˆi+50ˆj60ˆk passes through point A (6, 2, 6)  ˉMB=|ˆiˆjˆk (68)(21)(64) 805060|  ˉMB=|ˆiˆjˆk 212 805060| =ˆi(60100)ˆj(120160)+ˆk(10080) ˉMB=160ˆi+40ˆj180ˆk

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