A block of mass \(m\) is pressed against a wall by a force of magnitude \(F\) at an angle \(x^{\circ}\) with the horizontal. Coefficient of friction between the block and wall is \(\mu\).

Find the minimum force (in newton) required to keep the block at rest.

**Details and assumptions**:

Take \(g = 10\text{ ms}^{-2}\), \(m = \sqrt{5} \text{ kg} \), \(\mu = 0.5\).

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