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Birkofer Ch. 18 Work Word Scramble

 
 

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Question Answer
What is Work? is when a force causes and object to move in the direction of the force.
What is joule?Joule is the unit used to express work.
What is a watt?The unit used to express power.
What is power?Power is the rate at which work is done.
Define MachineA machine is a device that helps make work easier by changing the size or direction of a force.
Work inputthe work you do on a machine.
Work outputthe work done by the machine
levera simple machine consisting of a bar that pivots on a fixed point ( fulcrum ).
inclined planea simple machine that is a straight slated surface.
wedgeis a double sided inclined plane that moves
pulleyis a simple machine consisting of a grooved wheel that holds a rope or a cable
compound machinemade of two or more simple machines
mechanical efficiencyis a comparison of a machine's work output with the work input
mechanical advantagetells you how many times the machine multiplies force