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fulcrum is in the middle, effort force at one end load force at the other end

Class 1 Lever


class 1 lever

fulcrum at one end, load force is in the middle

class 2 lever

wheele barrel

class 2 lever

effort force is in the middle, and it makes things harder to move or lift

class 3 lever

fishing rod

class 3 lever

ratio expressing how much effort must be applied to life something

mechanical advantage

distance the effort force moves compared to the distance the load force moves

velocity ratio

fixed or moveable


effort force will equal the load force

single fixed pulley

used in tight spots

single fixed pulley

how to find the effort force needed is load force divided by the number of rope line

multiple fixed pulley

effort force equals half the load force because half of the load is supported by the rope that attaches to the ceiling

single movable pulley



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