The weight of the box is 9.81 times the mass, 62.2 which is 610.182 N. The coefficient of friction is the horizontal force divided by the normal force. The normal force is equal in magnitude to the weight of the box in newtons, 610.182 N so 185.1900551/610.182 which is 0.3034997
B 610.182
D 0.3034997
