Simple Machines
Simple machines can be used to make work easier and faster. Compound machines are basically simple machines placed together to work together. Work is force acting on an object that moves it a distance (W=F*d). A simple machine must have some force applied to it to do work. Simple machines let us use a small force to beat bigger forces. They can also change the direction of the force. Keep in mind that a simple machine cannot create energy (F input * d input = F output * d output). If you want the force output to be big and distance output to be small, you need to have a big distance input and a small force input. If you want the force output to be small and the distance output to be large, then the force input needs to be large and the distance input to be small (Fd = Fd). There are three simple machines will be focus on for this project: lever, pulley, and wheel and axle. The lever is used in seesaws, shovels, hammers, and other everyday objects. A lever consists of three main parts: the
fulcrum, rod, and the load the machine is acting on it. The fulcrum, or fixed point, allows the rod to move up and down freely. There are three classes of levers, but for this project a will be using the second-class lever. This lever allows us to use less force to act on the load. In other words, less force and more distance will be inputted to result in more force and less distance. This kind of lever in usually used to move heavy objects. The fulcrum is closer to the load to achieve this. This simple machine will probably be the best to lift the soda can. Most of the lever can be built out of wood. The fulcrum may be made out of metal or wood. The wheel and axle is used in automobiles, doorknobs, and clocks. The wheel and axle is like a first class lever but the fulcrum is replaced with an axle and the rod was replaced with a round disk or wheel. This is like a lever that just turns around in a circle. If axle is given a big force and a small distance, then the wheel is given a smal
Some topics in this essay:
,
wheel axle,
force distance,
simple machines,
input force,
output distance,
change direction,
force applied,
force input,
direction force,
type pulley,
type pulley type,
force output distance,
change direction force,
output distance output,
lift load pulley,
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Approximate Word count = 671
Approximate Pages = 3 (250 words per page double spaced)
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