Parallelogram Law/Examples
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Examples of Use of Parallelogram Law
$3$ Weights Suspended from Pulleys
Let $3$ bodies with mass be suspended by cords from pulleys like so:
The bodies will arrange themselves into equilibrium when the vector corresponding to the weight $\mathbf F_3$ of the middle body is equal and opposite the vector corresponding to the vector sum of the weights $\mathbf F_1$ and $\mathbf F_2$ according to the Parallelogram Law.