Calphy

An object with weight WW is dragged along a horizontal plane whose μ=1.5\mu=1.5 (coefficient of friction) by a force acting along a rope attached to the object. If the rope makes an angle θ\theta with the plane, then the magnitude of the force is:

F=μWμsinθ+cosθF=\dfrac{\mu W}{\mu\sin \theta + \cos \theta}

where 0θπ20\leq \theta \leq \dfrac{\pi}{2} .If there exists a value α\alpha for θ\theta such that FF is minimized, find the value of tanα\tan \alpha .

×

Problem Loading...

Note Loading...

Set Loading...