rotational axis
Pivot line through
A rotational axis is an imaginary line around which an object spins.
The Earth's rotational axis runs from pole to pole, tilted about 23 degrees from vertical, which produces the seasons.
In mechanics and physics, identifying the rotational axis helps calculate angular momentum and torque: The gyroscope maintains stability by spinning rapidly around its rotational axis.
Rotational force measurement
- angular momentumRotational motion quantity
- angular accelerationChange in spinning speed
- moment of inertiaResistance to angular acceleration
- gyroscopeSpinning disc measuring orientation
precession · centripetal force · rigid body dynamics · kinematics · circular motion · conservation of momentum · nutation · right-hand rule
Rotating rod for thread
- shaftNarrow vertical passage
- axleShaft for wheel rotation
- pivot pointCenter of rotation
- fulcrumLever's balance point
hinge · swivel · trunnion · gudgeon · hub · kingpin · rotor · crankshaft
Violent rotating windstorm
- vortexRotating fluid column
- whirlpoolRotating water formation
- cycloneRotating low-pressure storm system
- centrifugeSpinning density-separation device
gyration · revolution · orbit · tilt · wobble · spiral · eddy · dust devil
Arrangement around central axis
- bilateral symmetryEqual halves along midline
- invarianceQuality of staying unchanged
- chiralityMirror-image non-superimposability
torque
Rotational force measurement
- angular momentumRotational motion quantity
- angular accelerationChange in spinning speed
- moment of inertiaResistance to angular acceleration
gyroscope · precession · centripetal force · rigid body dynamics · kinematics · circular motion · conservation of momentum · nutation · right-hand rule
spindle
Rotating rod for thread
- shaftNarrow vertical passage
- axleShaft for wheel rotation
- pivot pointCenter of rotation
fulcrum · hinge · swivel · trunnion · gudgeon · hub · kingpin · rotor · crankshaft · camshaft
tornado
Violent rotating windstorm
- vortexRotating fluid column
- whirlpoolRotating water formation
- cycloneRotating low-pressure storm system
centrifuge · gyration · revolution · orbit · tilt · wobble · spiral · eddy · dust devil · maelstrom
radial symmetry
Arrangement around central axis
- bilateral symmetryEqual halves along midline
- invarianceQuality of staying unchanged
- chiralityMirror-image non-superimposability
- shafts and axesshaft, axle, spindle, crankshaft, driveshaft
- rotational mechanicsangular momentum, moment of inertia, torque, rigid body dynamics, gyroscope
rotational axisradius
Center-to-perimeter distance
circumference · tangent line · orbital path · perimeter · arc
rotate, rotation, axis, rotating, rotated, gyrate, rotates, rotisserie, rotational