2.64 The force \textbf{F} = (0.6\textbf{i} + 0.8\textbf{j}) kN is applied to the frame at the point D(0, 0, \(z_D\)). If the moment of \textbf{F} about the axis BC is zero, determine the coordinate \(z_D\).
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The moment of a force about an axis is given by the cross product of the position vector from the axis to the point of application of the force and the force vector itself. In this case, the position vector from the axis BC to the point D is given by r = 1.2i + Show more…
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