A cart loaded with bricks has a total mass of 28.6 kg and is pulled at constant speed by a rope. The rope is inclined at 22.3° above the horizontal and the cart moves 12.7 m on a horizontal floor. The coefficient of kinetic friction between ground and cart is 0.7
The acceleration of gravity is 9.8 m/s?
What is the normal force exerted on the cart by the floor?
Answer in units of N.