A father pulls his child, riding in a sled, up a snow-slope. The child and the sled altogether encompass a mass of 50.0kg. The slope forms an angle of 22.0o with the horizontal, and the rope is at a 10.0o handle to the slope. The coefficient of friction between the slope and sled is 0.23. Find out, how much work should the father do to pull the sled 0.2 km all along the slope?
If he does this 5 times in an hour, determine his average power output?