Simple Machines :: essays research papers

Simple MachinesDefinitionsMachine- A device that makes work easier by changing the speed , direction, oramount of a force.Simple Machine- A device that performs work with only one movement. Simple moulds include open, wheel and axle, inclined plane, screw, and wedge.Ideal mechanic Advantage (IMA)- A appliance in which work in equals work outsuch a machine would be frictionless and a 100% efficient IMA= De/DrActual Mechanical Advantage (AMA)- It is pretty much the opposite of IMA meaningit is not 100% efficient and it has friction. AMA= Fr/FeEfficiency- The amount of work put into a machine compargond to how much usefulwork is put out by the machine always surrounded by 0% and 100%.Friction- The force that resist motion between two surfaces that are touchingeach other.What do we use machines for?Machines are used for many things. Machines are used in everyday life exclusively to make things easier. You use many machines in a day that you might takefor granted. For example a simpl e ordinary broom is a machine. It is a form ofa lever. Our country or world would never be this evolved if it wasnt formachine. Almost every thing we do has a machine involved. We use machines to prevarication goods, for transportation, ect.In the W=F*d equation the trade of between force and distance is as youuse a machine the force goes gloomy and distance goes up. If there was no frictionthey would be equal and trade.There are six simple machines. They are a lever, pulleys, inclined plain,wheel and axle, screw, and wedge. The lever is used very often an example of alever is a broom. Your hand is the fulcrum and when you sweep it is a lever. Alever consist of a fulcrum, effort, and resistance. A pulley is used to lift orpull objects with a advantage. To get a advantage it matters how many lines aregoing to the load. For example if there is 3 lines to the load it is a 3/1advantage. A inclined plain is used to lift an object easier but with more work.Instead of lifting it straight up you push it a greater distance but with lessforce. A screw is a inclined plain wrapped around a cylinder post. Its like aramp around the screw.A wedge is a inclined plain with one or two sloping sides. Chisels,knives, and ax blades are examples of wedges.IMA is ideal mechanical advantage meaning a frictionless world with 100%efficiency. It is saying that work in and work out are just now the same.