A 126.6 {\rm N} carton is pulled up a frictionless baggage ramp inclined at 33.0^\circ above the horizontal by a rope exerting a 75.4 {\rm N} pull parallel to the ramp's surface. The carton travels 6.30 {\rm m} along the surface of the ramp.
Calculate the work done on the carton by the rope.
Calculate the work done on the carton by the gravity.
Calculate the work done on the carton by the normal force of the ramp.
What is the net work done on the carton?
Suppose that the rope is angled at 42.6^\circ above the horizontal, instead of being parallel to the ramp's surface. How much work does the rope do on the carton in this case?