simple machines

Fundamental mechanical devices

Simple machines are basic mechanical devices that multiply or redirect force: the lever, wheel and axle, pulley, inclined plane, wedge, and screw.

These six form the building blocks of all complex machinery.

A crowbar is a lever; a ramp is an inclined plane.

We studied simple machines in physics class.

lever

fulcrum

Lever's balance point

pry bar · balance · arm · beam · effort · load · torque · moment · cantilever · pivot point

inclined plane

ramp

Sloped connecting surface

  • slopeAngled terrain or steepness
  • slantOblique angle or bias
  • gradientRate of change across space

angle · elevation · tilt · ascent · descent · slide · effort · load · distance · accessibility

wheel

axle

Shaft for wheel rotation

  • rotationTurning on an axis
  • hubCentral connection point
  • spokesRods connecting hub to rim

rim · bearing · cog · gear · crank · flywheel · casters · sprocket · turntable · potter's wheel

screw

threads

Twisted fiber strands

  • helixSpiraling three-dimensional curve
  • pitchFrequency of sound
  • boltThreaded rod for nuts

nut · driver · fastener · torque · rotation · tighten · loosen · wood screw · Phillips · slotted

pulley

sheave

Channeled wheel for rope

hoist · crane · winch · rigging · counterweight · lifting · tackle · elevator · haul · flagpole

wedge

ax

Bladed chopping tool

splitter · cleaver · shim · taper · plow · splitting · cutting · prying · doorstop · zipper

Categories
Opposites
mechanical complexity

simple machinescompound machines

Systems joining basic mechanisms

mechanical systems · clockwork · engines · machinery · automated systems

technological sophistication

simple machinesadvanced technology

Sophisticated modern developments

automated systems · robots · electronics · smart devices · artificial intelligence

technological development

simple machinesadvanced technology

Sophisticated modern developments

robotic systems · electronic devices · artificial intelligence · industrial machinery · digital technology

Family

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