A toy chest and its contents have a combined weight of W-190 N. The coefficient of static friction between toy chest and floor u is 0.440. The child in the figure attempts to move the chest across the floor by pulling on an attached rope. (a) If 0 is 46.0, what is the magnitude of the force F that the child must exert on the rope to put the chest on the verge of moving? Determine (b) the value of for which F is a minimum and (c) that minimum magnitude.