A body of mass \( m \) rests on horizontal surface. The coefficient of friction between the body...

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A body of mass \( m \) rests on horizontal surface. The coefficient of friction between the body and the surface is \( \mu \). If the mass is pulled by a force \( P \) as shown in the figure, the limiting friction between body and surface will be
[BHU 2004]
(a) \( \mu m g \)
(b) \( \mu\left[m g+\left(\frac{P}{2}\right)\right] \)
(c) \( \mu\left[m g-\left(\frac{P}{2}\right)\right] \)
(d) \( \mu\left[m g-\left(\frac{\sqrt{3} P}{2}\right)\right] \)
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