Physics

Physics

Problem

A small ring at rest is pulled by three coplanar forces. Force F1\mathbf{F}_1 is 80 N80\,\text{N} along the positive xx-axis, and force F2\mathbf{F}_2 is 60 N60\,\text{N} along the positive yy-axis. The magnitude and direction of the third force F3\mathbf{F}_3 that will keep the ring in equilibrium are a) 100 N100\,\text{N} making 37∘37^{\circ} above the negative xx-axis b) 80 N80\,\text{N} along the negative xx-axis c) 100 N100\,\text{N} making 37∘37^{\circ} below the negative xx-axis d) 140 N140\,\text{N} making 37∘37^{\circ} below the negative xx-axis

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