Details Title: Ch 8 vocab Description: Ch 8 vocab Total Flash Cards: 14 Created: 01/04/2008 08:59:33		New Users: To study from this flashcard set, or to create your own your own study flash cards, REGISTER HERE. Existing Users: CLICK HERE. Additional Physics Flashcards
Cards in this set: Term Work Definition Occurs when a force causes an object to move in the direction of the force. Term Joule Definition A unit used to measure work Term power a rate in which work is done Definition watt joules per second Term machine Definition A device that helps make work easier Term Definition Term work input Definition aplying force Term work output Definition mechanical advantage tells how many times the machine multiplies force  Term Mechanical efficiency Definition a comparission of a machines work input Term Lever Definition a bar that pivots at a fixed point Term inclined plane Definition a simple machine that is a striaght slanted surface Term wedge Definition a double inclined plane that that moves Term screw Definition incline plaine wrapped in a spiral Term wheel and axle Definition a simple machine consisting of two circular objects Term pulley Definition a simple machine consisting of a grovved wheel thaty holds a rope or cable