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What is polar moment of inertia? What is it’s physical significent? and which field it is applied?

What is polar moment of inertia? What is it’s physical significent? and which field it is applied?

Grade:6

1 Answers

Arun
25750 Points
6 years ago
The polar moment of inertia, also known as second polar moment of area, is a quantity used to describe resistance to torsional deformation (deflection), in cylindrical objects (or segments of cylindrical object) with an invariant cross-section and no significant warping or out-of-plane deformation.Though the polar moment of inertia is most often used to calculate the angular displacement of an object subjected to a moment (torque) applied parallel to the cross-section, it must be noted that the provided value of rigidity does not have any bearing on the torsional resistance provided to an object as a function of its constituent materials. The rigidity provided by an object`s material is a characteristic of its shear modulus, G. Combining these two features, one is able to calculate a shaft`s angular deflection, theta , due to the applied torque, T

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