InterviewSolution
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InterviewSolution
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\left. \begin{array} { l l } { \text { noment of force, for } \vec { F } = ( \hat { i } + \hat { j } + \hat { k } ) } \\ { \text { ints } ( - 2,3,4 ) \text { about point } ( 1,2,3 ) , \text { is } } \\ { 4 \hat { j } - \hat { k } } & { ( 2 ) } & { 4 ( \hat { j } - \hat { k } ) } \\ { 4 ( \hat { j } - 3 \hat { k } ) } & { ( 4 ) } & { 4 ( \hat { j } + \hat { k } ) } \end{array} \right. |
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Answer» Here dr vector is = (-2-1)i+(3-2)j+(4-3)k = -3i+j+k also, moment = F×dr = (i+j+k) = (-3i+j+k) M = i(0) +j(1+3) +k(1+3) = 4(j-k) option 2 |
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