Four forces act on a body as shown in the figure: \(5~\text{N}\) to the right, \(6~\text{N}\) to the left, \(7~\text{N}\) upward and \(8~\text{N}\) downward. What additional force (magnitude and direction measured from the positive \(x\text-\)axis) must be applied so that the net acceleration of the body is zero?
1. \(\sqrt 2~ \text{N}, ~45^\circ\) 2. \(\sqrt 2~ \text{N},~ 135^\circ\)
3. \(\dfrac{2}{\sqrt 3}~ \text{N}, ~30^\circ\) 4. \(2~ \text{N}, ~45^\circ\)
Subtopic:  Types of Forces |
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Level 2: 60%+
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