Get involved with the Canadian Ski Patrol with on-hill rookie training

SOLVED: Suppose the ski patrol lowers a rescue sled carrying an injured skiier, with a combined mass of 87.5 kg, down a 60.0° slope at constant speed, as shown in the Figure. The coefficient of kinetic friction between the sled and the snow is 0.100. How much work, in joules, is done by the rope on the sled as the sled moves 27.5 m?

Ski patrollers recognized for saving man’s life