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Introduction
Simple machines are mechanisms that are designed to reduce the amount of effort needed to perform simple tasks. There are 6 main simple machines: the wedge, wheel and axle, lever, inclined plane, screw, and pulley. The mechanical advantage of a simple machine is the ratio of output to the input force that is used to assess the performance of a mechanism. Mechanical advantage is important when building mechanisms in order to get the best results when using the least amount of energy. The projects below show a variety of simple and complex machines that use inclined planes, wheel and axles, levers, pulleys, gears, and linkages. ~PTMS Student
Challenge Card #5-Gone Fishing
Challenge Card #5-Gone Fishing
The challenge for this activity was to create a fishing rod that was at least 10 inches and included only 10 and 3 inch rods, wheels, hand cranks, and a rope. To do this, we connected two gears on a fishing rode that held the string. We then connected the hand crank to a large gear that held on to a small gear to create a mechanical advantage. Finally we added the string onto the two wheels and tested it on a fish/weight.
The challenge for this activity was to create a fishing rod that was at least 10 inches and included only 10 and 3 inch rods, wheels, hand cranks, and a rope. To do this, we connected two gears on a fishing rode that held the string. We then connected the hand crank to a large gear that held on to a small gear to create a mechanical advantage. Finally we added the string onto the two wheels and tested it on a fish/weight.
~PTMS Student
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