A cart loaded with bricks has a total mass
of 12.7 kg and is pulled at constant speed by
a rope. The rope is inclined at 22.5◦
above the horizontal and the cart moves 30.7 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
2-How much work is done on the cart by the
rope?