A toy chest and its contents have a combined weight of 180 Newton. The coefficient of static friction between the toy chest and the floor is 0.42. Your six-year-old nephew attempts to move the chest across the floor by pulling on a rope. Find the magnitude of the force that the child must exert on the rope to put the chest on the verge of moving if the rope is pulling on the chest at an angle of 42 degree above the horizontal.