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Details Title: Work & Simple Machines Description: Vocabulary Total Flash Cards: 16 Created: 08/31/2004 12:25:37	To study from this set of flash cards, or to create your own your own study flash cards, register HERE. If you are already a registered user, CLICK HERE.
Cards Term Work Definition Occurs when force causes an object to move in the same direction that the force is applied. Term Work calculation Definition work = force X distance W = F X D Term Newtons Definition A measure of force Term Simple machine Definition A machine that only uses one movement. It only requires one motion. Term Types of simple machines Definition Pulley Lever Inclined plane Screw Wedge Wheel & axle Term Compound machine Definition Combination of simple machines Term Mechanical advantage Definition (MA) The number of times force is increased by a machine. Term Pulley Definition Type of simple machine. It is an object with a groove and a rope or chain running throufh the groove. Term How a pulley works Definition A pulley changes the direction of the input force. Term Input force Definition The force applied to a machine. Sometimes called effort. Term Output force Definition The force exerted by a machine. Term Lever Definition A type of simple macahine. A rod or plank that pivots (turns) around a fixed point. Term Fulcrum Definition The pivot point in a lever system. Term How levers work Definition Can increase force. Can increase the distance over which a lever is applied. Term Types of levers Definition 1st class 2nd class 3rd class Depends on the position of input force (effort), output force load or resistance), and fulcrum Term 1st class lever Definition The fulcrum is between the effort (input force) and load (output force)