A skier of a mass 76kg is pulled up a slope by a motor driven cable. a) How much work is required to pull him 55m up at 30 degree slope (assumed...

A skier of a mass 76kg is pulled up a slope by a motor driven cable. a) How much work is required to pull him 55m up at 30 degree slope (assumed frictionless) at a constant speed of 2.3 m/s. (Answer in J)b) What power must a motor have to perform this task. (Answer in horse power).