Statics and Dynamics Quiz
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A 3D force F=Fxi^+Fyj^+Fzk^\mathbf{F} = F_x\hat{i} + F_y\hat{j} + F_z\hat{k} acts at point P=(a,b,c)P = (a, b, c) m. An engineer wants to find the component of the moment about the yy-axis (i.e., My=j^⋅MOM_y = \hat{j}\cdot\mathbf{M}_O, where MO=rOP×F\mathbf{M}_O = \mathbf{r}_{OP}\times\mathbf{F}).
Which of the following correctly expresses MyM_y and identifies which force and position components contribute to it?
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