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what is the applications of calculating moment of inertia?

what is the applications of calculating moment of inertia?

Grade:12th pass

1 Answers

Arun
25750 Points
6 years ago
Few applications of MOI-
  • FLYWHEEL of an automobile. Flywheel is a heavy mass mounted on the crankshaft of an engine. The magnitude of MOI of the flywheel is very high and helps in storing the energy.
  • Hollow shaft- An hollow shaft transmits more power compared to that of a solid shaft(both of same mass). The MOI of hollow shaft is more compared to that of a solid shaft. ( In a way, the mass at the center of solid shaft is removed and is stacked at the periphery and hence increasing its moment of inertia).
  • Shipbuilding- MOI has a big impact on shipbuilding. A ship may sink by rolling but a ship will never sink by pitching. The reason is, the MOI over pitching axis is significantly huge compared to that over rolling axis.      
In battleships the MOI inertia is high in order to reduce the time period of oscillation as a result of any disturbance. 
In the above application the MOI is increased by just placing the significant amount mass away from the axis of rotation or oscillation.

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