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Pulleys
Simple Machines: Pulleys
Question | Answer |
---|---|
single fixed pulley | has the fulcrum between the force and the load |
pulley | a kind of lever that can change the direction of force and/or multiply |
numbers of lines | determines how much the force is amplified |
block and tackle | consists of a fixed and a movable pulley |
movable pulley | set up so the force and load move in the same direction |
__can be set up in 3 ways: single fixed pulley, movable pulley, block and tackle | pulley |
in a pulley system, the effort__and effort __ movement are in the same direction | force movement |
in a block and tackle system, the effort force moves__as the load moves__ | downward up |
with the pulley system, the resistance__is in the direction of gravity, and the resistance__motion is the opposite direction | force motion |
with a movable pulley, the___is at the end of the lever where the supporting rope touches the pulley | fulcrum |
what does a movable pulley resemble | a second class lever |
what does a single fixed pulley behave like | a first class lever |
this type of pulley only changes the direction of the force | single fixed pulley |