Q1
Forces, equilibrium and resultants
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The resultant of these forces $\overrightarrow{OP}, \overrightarrow{OQ}, \overrightarrow{OR}, \overrightarrow{OS}$ and $\overrightarrow{OT}$ is approximately $\_\_\_\_$ N. [Take $\sqrt{3} = 1.7, \sqrt{2} = 1.4$ Given $\hat{\mathrm{i}}$ and $\hat{\mathrm{j}}$ unit vectors along $x, y$ axis]
(1) $-1.5\hat{\mathrm{i}} - 15.5\hat{\mathrm{j}}$
(2) $9.25\hat{i} + 5\hat{j}$
(3) $3\hat{i} + 15\hat{j}$
(4) $2.5\hat{\mathrm{i}} - 14.5\hat{\mathrm{j}}$