mechanical advantage
Effort reduction ratio
Mechanical advantage is the ratio of output force to input force in a machine—how much a lever, pulley, or gear system multiplies your effort.
A crowbar with high mechanical advantage lets you pry open a crate with less force than bare hands would require.
The block and tackle gives us a mechanical advantage of four to one.
Pivoting bar for lifting
- pulleyGrooved wheel for rope
- wheel and axleRotation-based force multiplier
- inclined planeTilted flat surface
- wedgeTapered splitting tool
screw · fulcrum · block and tackle · ramp · jackscrew · crowbar · wheelbarrow · nutcracker
Increases effective strength applied
- effortApplied energy toward goals
- loadCarried weight or burden
- inputData received for processing
- outputWhat something generates
ratio · torque · tension · resistance · work · displacement · lifting capacity · purchase
Toothed wheel or belongings
- crankRotary operating handle
- winchDrum-and-cable lifting mechanism
- hoistRaise with tackle
- jackDevice for lifting vehicles
ratchet · linkage · cam · sprocket · cogwheel · gearbox · transmission · tackle
Comparative numerical relation
- efficiencyProductive without waste
- idealStandard of perfection
- actualExisting in fact
- trade-offExchange requiring sacrifice
Lifter or wader
- elevatorVertical conveyance between floors
- bicyclePedal-powered two-wheeler
- car jackForcible vehicle theft
- bottle openerCap-removal tool
fishing reel · corkscrew · nail clipper · stapler · garage door · drawbridge · trebuchet · catapult
lever
Pivoting bar for lifting
- pulleyGrooved wheel for rope
- wheel and axleRotation-based force multiplier
- inclined planeTilted flat surface
wedge · screw · fulcrum · block and tackle · ramp · jackscrew · crowbar · wheelbarrow · nutcracker · scissors
force multiplier
Increases effective strength applied
output · ratio · torque · tension · resistance · work · displacement · lifting capacity · purchase
gear
Toothed wheel or belongings
jack · ratchet · linkage · cam · sprocket · cogwheel · gearbox · transmission · tackle · differential
ratio
Comparative numerical relation
- efficiencyProductive without waste
- idealStandard of perfection
- actualExisting in fact
crane
Lifter or wader
- elevatorVertical conveyance between floors
- bicyclePedal-powered two-wheeler
- car jackForcible vehicle theft
bottle opener · fishing reel · corkscrew · nail clipper · stapler · garage door · drawbridge · trebuchet · catapult · piano key
- mechanicsforce, turning, rotation, momentum, velocity
- simple machineslever, pulley, wheel and axle, inclined plane, screw
- rope rescuerappel, abseil, descender, ascender, belay
- ArchimedesArchimedes screw, eureka, eureka moment, buoyancy, hydrostatics
- machine specshorsepower, torque, RPM, power output, voltage
- mechanismsgear, gearbox, gear train, cog, pulleys
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