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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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written 3.9 years ago by |
ˉF=80ˆi+50ˆj−60ˆk passes through point A (6, 2, 6) ∴ ˉMB=|ˆiˆjˆk (6−8)(2−1)(6−4) 8050−60| ∴ ˉMB=|ˆiˆjˆk −212 8050−60| =ˆi(−60−100)−ˆj(120−160)+ˆk(−100−80) ˉMB=−160ˆi+40ˆj−180ˆk