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Work n simple machin

ch.4 voc

QuestionAnswer
Work is is the transfer of energy that occurs when a force make an object move
Machine is a device that makes doing work easier
Effort force the force you apply to the machine
Resistance force the force applied by the machine to overcome material resistance
Input work the work done by you on a machine
Outwork work the work done by the machine
Mechanical advantage the number of times a machine multiples the effort force
Efficiency is a measure of how much of the work put into a machine is changed into useful output work by the machine
Lever is bar that is free to pivot, or turn, about fixed point
Fulcrum the fixed point on the lever, or any machine
Effort arm where the effort force is applied
Resistance where the resistance force is applied
Pulley is a grooved when with q rope,chain,or cable running
Gears a modified type of wheel & axle
Compound machines two or more simple machines used together
Created by: tom.588fisher
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