the handle of a fl oor mop of mass makes an angle with the vertical direction as shown in the fi gure. let be thecoeffi cient of kinetic friction between mop and fl oor and the coeffi cient of static friction between mop and fl oor. neglect themass of the handle and mop. what is the minimum angle for it to be possible to slide the mop across the fl oor by applyingforce in the direction of the handle?