Friday, March 25, 2011

eLearning Lesson 2 by Idris (22)

Image 1: This shows a fixed-pulley system used by a window screen to close and open it.
Image 2: This shows a 2nd class lever being used in a treadmill.
Image 3: This shows a gear system being used in a bicycle.

Image 4&5: This is the situation that can be improved. (Click to zoom)

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