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Simple Machines, This is a class 1 lever because the fulcrum is between…
Simple Machines
Lever
Class 1: 
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This is a level 3 lever, because the force is between the fulcrum and the load.
This is a pulley, because of the wheel that goes around and makes the rope around it pull the weight upward, or if you release your grip, then the weight will go downwards.
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This is an inclined plane, because it's a flat surface that allows you to make this roller thing easier to roll up rather than carrying it.
This is a wedge, because the mallet is hammering a sharp edge into something, causing the two sides to seperate.
This is a screw, because the grooves in it allows it when it's getting inserted somewhere to hold the two things together.