Machines - Tools that make work easier., 6 Simple Machines - lever, pulley, screw, wheel and axle, inclined plane, wedge, simple machine - a device that only needs a SINGLE input force to do work, force - A push or pull on an object., wedge - A triangle shaped tool that is wide at one end and pointed at the other to help cut or split other objects., wheel and axle - A rod attached to a wheel. It makes it easier to move or turn things. (Lever arm fixed to a shaft), screw - An inclined plane wrapped around a cylinder or cone. Commonly used to fasten objects together. Uses rotary motion., pulley - A wheel that has a rope wrapped around it. Used to lift heavy objects by changing the direction or amount of the force., inclined plane - A flat surface that is raised so one end is higher than the other. It helps move heavy objects up or down., lever - A stiff bar resting on a pivot (called the fulcrum) that makes moving objects easier. Effort force, load, fulcrum., Seesaw, Crowbar, Shovel - Examples of LEVERS, Ramp, Stairs, Ladder - Examples of INCLINED PLANES, Knife, Door stop, zipper - Examples of WEDGES, Bicycle wheel, Doorknob, Roller Skates - Examples of WHEELS AND AXLES, Jar lid, light bulbs - Examples of SCREWS, Flag Pole, elevators - Examples of PULLEYS, work - The transfer of energy that occurs when a force makes an object move. It equals FORCE x DISTANCE, 1st class lever - A lever where the fulcrum is between the effort and load Ex: scissors, 2nd class lever - A lever where the load is between the fulcrum and effort Ex: a wheelbarrow, 3rd class lever - A lever where the effort is between the load and fulcrum EX: A fishing rod, block and tackle pulley - a pulley system made up of fixed and movable pulleys, mechanical advantage - a measure of how much a simple machine increases or decreases the force applied., kinetic energy - the energy of motion, Actual Mechanical Advantage (AMA) - determined by the physical measurement of forces, Ideal Mechanical Advantage (IMA) - Determined by physical dimensions,

Simple Machines

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