home *** CD-ROM | disk | FTP | other *** search
/ Eyewitness: Encyclopedia of Science / Mac_DorlingKindersley_EyewitnessEncyclopediaOfScience.iso / mac / PHYS / SIMA / SIMA0N0M.WAV (.mp3) < prev    next >
Waveform Audio File Format  |  1995-06-29  |  370.8 KB  |  1 channel  |  22,050 sample rate  |  34 seconds  |  [TEXT/LMAN]
Transcription: A simple machine is something that reduces the effort needed to do work. Machines come in all shapes and sizes and can be very basic. A bottle opener, a screw, and even your skeleton work as machines. They magnify the effort that we apply to a task and enable us to do many things that our muscular strength alone could not manage. The amount of effort saved by using a machine is known as its mechanical advantage. the mechanical advantage of a machine, the less effort is required relative to the load.