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MACHINES, Where n is total number of pulleys - Coggle Diagram
MACHINES
LEVER-A lever is a simple machine made of a rigid beam and a fulcrum. 
Principle of a leaver
Clockwise moment of load about fulcrum = Anticlockwise moment of effort about fulcrum
Load × Load arm = Effort × Effort arm
1) effort arm = load arm, MA = 1
2) effort arm > load arm, MA > 1
3) effort arm < load arm, MA < 1
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Mechanical Advantage
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PULLEY in mechanics, a wheel that carries a flexible rope, cord, cable, chain, or belt on its rim
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