(See related pages)
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Atwood's Machine, page 481 | ||
| Friction and Acceleration | ||
| What factors will affect the acceleration of a system? How much of a difference does friction make? The Atwood machine is a simple system consisting of two masses and a pulley. Play with the weight of the masses to see how acceleration is affected. ( http://www.msu.edu/user/brechtjo/physics/atwood/atwood.html ) | ||
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| Atwood Machine Applet | ||
| This Java applet also gives you an opportunity to play around with different masses for the Atwood machine, and see the results on acceleration. ( http://lectureonline.cl.msu.edu/~mmp/kap4/cd097a.htm ) | ||
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Accident Investigation and Vehicle Safety, page 509 | ||
| Helmet Safety Standards | ||
| The Snell Memorial Foundation tests and certifies helmets for many sports. You can read descriptions of the various helmets and find out what they are tested for and how they qualify for certification. ( http://www.smf.org/stds.html ) | ||
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| National Institute for Sports Science and Safety | ||
| NISSS specializes in research for the development of standards for sports equipment through basic and applied science. ( http://www.nisss.org/ ) | ||
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| U.S. Safety Standards | ||
| Find out which items of protective equipment have safety standards developed just for them: helmets, eye protectors, mouth protectors, and others. ( http://www.nyssf.org/safetyequipment.html ) | ||
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