Problem
1. A 100-hp car engine has a drive shaft rotating at 2000 RPM. How much torque is on the shaft for 25% of full power?
2. A crane uses 2 kW to raise a 100-kg box 20 m. How much time does it take?
3. An escalator raises a 100-kg bucket 10 m in 1 min. Determine the rate of work in the process.
4. A piston/cylinder of cross-sectional area 0.01 m2 maintains constant pressure. It contains 1 kg of water with a quality of 5% at 150?C. If we heat the water so that 1 g/s of liquid turns into vapor, what is the rate of work out?
The response should include a reference list. Double-space, using Times New Roman 12 pnt font, one-inch margins, and APA style of writing and citations.