A student who weighs 545 N climbs a stairway (vertical height of 4.3 m) in 30 s. What is the power output of the student? Please don't show the answer to the problem.

A 126.2 N carton is pulled up a frictionless baggage ramp inclined at 33.0  above the horizontal by a rope exerting a 79.8 N pull parallel to the ramp's surface. The carton travels 6.15 m along the surface of the ramp. Calculate the work done on the carton by the rope, gravity, and normal force of the ramp. What is the net work done on the carton? Suppose that the rope is angled at 40.8  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?

A farmer is using a rope and pulley to lift a bucket of water from the bottom of a well that is hy = 9.5 m deep. The farmer uses a force F1 = 59.5 N to pull the bucket of water directly upwards. The total mass of the bucket of water is mb + mw = 3.1 kg. a.Calculate how much work Wf in J the farmer does on the bucket of water (via the rope) to raise it to ground level.  b.Calculate how much work Wg in J gravity does on the bucket filled with water as the farmer lifts it up the well.  c. Calculate the net work Wnet in J done on the bucket of water by the two forces F1 and Fg.

You are out on a nice bike ride in the mountains. You and the bicycle together have a mass of 83 kg. Up ahead, there is a huge hill to climb. You stop and drink some water and start to climb. The climb is very hard work. You entertain yourself with your nifty bike computer, which is reporting a power output of 400.0 W! At the end, you've climbed 128 m vertically in 4 minutes and 32 seconds! a) Assuming your power output was constant, how much work did you do during your climb? b) What is the energy transfer equation during this climb? c) Assuming your power output was constant, and no energy was lost, what was your final kinetic energy (remember you started off at rest?