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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 |