(Solved) A body of weight W is dragged along a horizontal plane by means of a force P whose line of action makes an angle with the plane. The magnitude


Question: A body of weight \(W\) is dragged along a horizontal plane by means of a force \(P\) whose line of action makes an angle with the plane. The magnitude of the force is given by the equation

\[P=\frac{m W}{m \sin \theta+\cos \theta}\]

where \(m\) denotes the coefficient of friction. For what value of \(\theta\) is the pull a minimum?

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