The helicopter view in Fig. P3.29 (page 74) shows two W people pulling on a stubborn mule. The person on the right pulls with a force of magnitude and direction of .
The person on the left pulls with a force of magnitude and direction of . Find (a) the single force that is equivalent to the two forces shown and (b) the force that a third person would have to exert on the mule to make the resultant force equal to zero. The forces are measured in units of newtons (symbolized N).
We must first find the resultant force in the x and y directions before we can find the single force.
As a result, the magnitude is determined by:
In addition, the angle is determined by:
Hence, the single force is
Hence, the magnitude and angle in the opposite direction is .
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