http://www.ck12.org Chapter 8. Work, Power, and Simple Machines
- How many grandfather clocks could you power with the same amount of power as is used by a single light
bulb?
The following website has practice problems on work and power: http://www.angelfire.com/scifi/dschlott/workpp.h
tml
Review
Questions
- If the circumference of an orbit for a toy on a string is 18 m and the centripetal force is 12 N, how much work
does the centripetal force do on the toy when it follows its orbit for one cycle? - A 50.0 kg woman climbs a flight of stairs 6.00 m high in 15.0 s. How much power does she use?
- Assuming no friction, what is the minimum work needed to push a 1000. kg car 45.0 m up a 12.5° incline?
- power:The rate at which this work is performed.