Resolve the 30-lb force into components along the u and v axes, and determine the magnitude of each of these components.

Solution:

Draw the components as follows. (Note that the diagrams are not to scale)

Draw the vector components separately as follows.

Use sine law to figure out the magnitude of each component.

\frac{v}{\sin30^0}=\frac{30}{\sin105^0}

v=15.5lb

\frac{u}{\sin45^0}=\frac{30}{\sin105^0}

u=22lb

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