pulley systems
Lifting force multipliers
A pulley system is an arrangement of one or more wheels with grooved rims through which rope or cable passes, used to lift heavy loads or change the direction of force.
Adding pulleys multiplies mechanical advantage—a two-pulley system halves the force needed to lift a weight.
The stage crew used a pulley system to raise the backdrop.
Block and tackle refers to pulley systems with multiple wheels housed together.
- block and tacklePulley arrangement for lifting
- cranesLifting machines or birds
- mechanical advantageForce output over input
- cableHeavy-duty woven line
- ropeThick twisted fibers
counterweights · hoists · sheave · wheel · axle · elevators · belt · Archimedes · bearing · climbing gear · zip line · tension · conveyor belts · pulleys · torque · friction · tackle · load
- science experimentsvolcano model, elephant toothpaste, color change, slime making, baking soda volcano
- material handlingforklifts, lifting, conveyors, carrying, cranes
- hands-on exhibitstouch tanks, touch screens, water tables, building blocks, ball machines
- mechanismsgear, gearbox, gear train, cog, pulleys
- mechanicsforce, turning, rotation, momentum, velocity
- ArchimedesArchimedes screw, eureka, eureka moment, buoyancy, hydrostatics