Question: An object with weight W is dragged along a horizontal plane by a force acting along a rope attached to the object. If the rope

An object with weightWis dragged along a horizontal plane by a force acting along a rope attached to the object. If the rope makes an anglewith the plane, then the magnitude of the force is

F=W / sin() + cos()

whereis a constant called thecoefficient of friction.

(a) Find the rate of change ofFwith respect to().

dF / d=

(b) When is this rate of change equal to 0?

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