A polar explorer pulls a sled on dry snow (the coefficient of kinetic friction is 0.12 for sled on snow). The rope attached to the sled pulls at an angle of 9° above the horizontal and the explorer pulls with with 600 N of force. The sled has a total mass 71 kg. While the explorer pulls the sled for a horizontal distance of 41 m (before he needs to take a break),
a) What is the mechanical work done by the explorer (i.e. the rope) on the sled?