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Physical Science

TermDefinition
lever a bar that is free to rotate around a fixed point, called a fulcrum
fulcrum fixed pivot point of a lever
effort force the force you provide to the machine
load force the weight of the load the machine is moving
effort arm distance between the fulcrum and the effort force
load arm distance between the fulcrum and the load force
Class 1 lever type of lever where the fulcrum is between the load and the effort
Class 2 lever type of lever where the load is between the fulcrum and the effort
Class 3 lever type of lever where the effort is between the fulcrum and the load
wheel barrow example of a Class 2 lever
scissors example of a Class 1 lever
boat oar example of a Class 3 lever
Work when a force moves an object a certain distance
joule unit for Work
ramp another word for inclined plane
distance a ramp allows you to use less force over a longer _____.
input work the work you do on the machine
output work the work the machine does on the load
mechanical advantage comparison of the load force to the effort force
machine changes the size or direction of a force
Created by: brookwell
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