Scalar Moment of Inertia of A Rigid Body
In mechanics of machines, when designing rotary parts like gears, pulleys, shafts, couplings etc., which are used to transmit torques, the moment of inertia has to be considered. The moment of inertia is given about an axis and it depends on the shape and density of a rotating element.
When considering rotating systems like drive shafts, gear trains, and pulleys with more than one rotating element, more than one axis of rotation, an equivalent moment of inertia for the system can be found. The moment of inertia can be determined experimentally by measuring the angular acceleration for a known torque or it can be calculated from the masses and dimensions of the rotating elements and shafts.
Read more about this topic: Inertia Tensor
Famous quotes containing the words moment, inertia, rigid and/or body:
“Inside the brain
Two memories that long had lain
Now quivered toward each other, lipped
Together, and together slipped;
And for a moment all was plain
That men have thought about in vain.”
—Robert Frost (1874–1963)
“What is wrong with priests and popes is that instead of being apostles and saints, they are nothing but empirics who say “I know” instead of “I am learning,” and pray for credulity and inertia as wise men pray for scepticism and activity.”
—George Bernard Shaw (1856–1950)
“Success makes men rigid and they tend to exalt stability over all the other virtues; tired of the effort of willing they become fanatics about conservatism.”
—Walter Lippmann (1889–1974)
“If my body is enslaved, still my mind is free.”
—Sophocles (497–406/5 B.C.)