Which cross-section is used maximum with polar moment of inertia?.About a parallel axis in the cross –section.It is about a line in the cross-section.Why is it called polar moment of inertia?.Polar moment of inertia of a circular section is.Polar moment of inertia of a rectangular cross section is.Both parallel & perpendicular axis theorems.
Polar Moment of Inertia is utilized to calculate the angular displacement of a body subjected to torque.
A quantity expressing a body’s tendency to resist angular acceleration is known as the Moment of Inertia, whereas Polar Moment of Inertia is measure of an object’s ability to resist torsion under specified axis when and torque is being applied.“ Polar Moment of Inertia is also called “ Second Moment of Area“, “ Area Moment of Inertia“, “ Polar Moment of Area” or “ Second Area Moment“. Higher the polar moment of Inertia, the less the object will twist after torque is applied.The polar moment of area can be utilized to calculate the moment of inertia with arbitrary cross-section. It is utilized to calculate the angular displacement of a body subjected to torque. Torsion is a widely known term used in field of solid mechanics, it generally expresses the twisting of object due to an applied torque. Polar Moment of Inertia is measure of an object’s ability to resist torsion under specified axis when and torque is being applied. In polar moment of Inertia units of m 4 are used for measuring.ĪDVERTISEMENT What is Polar Moment of Inertia? In Moment of Inertia units of kg m 2 are used for measuring. Polar Moment of Inertia can be defined mathematically as. The mathematical representation of Moment of Inertia is. Comparison ChartĪ quantity expressing a body’s tendency to resist angular acceleration is known as the Moment of Inertia. On the other hand, Polar Moment of Inertia is a measure of a body’s ability to resistance against the torsion when torque is being applied. The resistance being done here is against the rotation rate when certain torque is applied. It is the measure of an object’s resistance against the angular acceleration. Moment of Inertia is often refereed as mass moment of inertia or the angular mass. Moment of Inertia and Polar Moment of Inertia are both the quantities expressing a body’s tendency to resist changes when certain torque is being applied.