One of the use of the centre of mass or centroid is as in the mass moment of inertia is that the net force acts at the ___________ of the loading body.

Moments of Inertia topics include: Moment and product of an inertia for an area, moment of inertia for inclined axis, radius gyration of area, mohrs circle and mass moment of inertia. The moment of inertia, also known as rotational inertia, is a quantity that determines the torque of a rigid body. It is a measure of how much an object resists rotational acceleration about an axis.  The moment of inertia depends on the distribution of mass in an object. The greater the distance the mass is from the center of rotation, the greater the moment of inertia.  There are three types of moment of... Show more

Moments of Inertia topics include: Moment and product of an inertia for an area, moment of inertia for inclined axis, radius gyration of area, mohrs circle and mass moment of inertia.

The moment of inertia, also known as rotational inertia, is a quantity that determines the torque of a rigid body. It is a measure of how much an object resists rotational acceleration about an axis. 

The moment of inertia depends on the distribution of mass in an object. The greater the distance the mass is from the center of rotation, the greater the moment of inertia. 

There are three types of moment of inertia:
Mass moment of inertia
Area moment of inertia
Polar moment of inertia 

The polar moment of inertia is a measure of an object's capacity to oppose or resist torsion when some amount of torque is applied to it on a specified axis. Torsion is the twisting of an object due to an applied torque. 
The radius of gyration of a body is defined as the perpendicular distance from the axis of rotation to the point of mass whose mass is equal to the mass of the whole body. 

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