# How do you find the mass moment of inertia of a rectangle?

## How do you find the mass moment of inertia of a rectangle?

Note: Use dot “.” as decimal separator….MASS MOMENT OF INERTIA OF A THIN RECTANGULAR PLATE.

Moment of Inertia of Rectangular Plate Formula
Mass moment of inertia about x axis Ix= (M/12) * a2
Mass moment of inertia about y axis Iy= (M/12) * b2
Mass moment of inertia about z axis Iz= (1/12)*M*(a2+b2)

What is the moment of inertia of a point mass?

For a point mass, the moment of inertia is just the mass times the square of perpendicular distance to the rotation axis, I = mr2. That point mass relationship becomes the basis for all other moments of inertia since any object can be built up from a collection of point masses.

What is Ixx moment of inertia?

The moment of inertia is also known as the Second Moment of the Area and is expressed mathematically as: Ixx = Sum (A)(y2) In which: Ixx = the moment of inertia around the x axis. A = the area of the plane of the object.

### How do you calculate mass and inertia?

Translational Inertia = ma, where “m” is the mass, and “a” is the acceleration of the object. Calculate the rotational inertia or the moment of inertia by multiplying the mass of the object with square of the distance between the object and the axis, the radius of rotation.

Does inertia depend on mass?

Inertia is that quantity which depends solely upon mass. The more mass, the more inertia. Momentum is another quantity in Physics which depends on both mass and speed.

Does moment of inertia depend on mass?

The moment of inertia depends not only on the object’s mass, but also the distribution of that mass in relation to the axis of rotation. The moment of inertia of an object usually depends on the direction of the axis, and always depends on the perpendicular distance from the axis to the object’s centre of mass.