# What is the moment of inertia of a solid?

### What is the moment of inertia of a solid?

the moment of inertia is to rotational movement the analog of mass for translational movement: it reflects the “resistance” thatopposes a body to its setting in motion.

### How to calculate moment intensity?

How to calculate the intensity of the moment? If the strength of the force is not known, it can be calculated from the mass of the object and its acceleration, provided that no other force is acting on it. The formula to use is: F = M × A.

### How to calculate the meaning of a moment?

If a force acts at a certain distance (d) from a point, say that this force exerts a moment M with respect to this point, this moment is calculated as M = F x d. How to find the meaning of a moment? The direction of the moment results from the direction of rotation of the force. The distance d is called the lever arm.

### How to calculate the moment of a force?

Reminder: the moment of a force is equal to the product of the intensity of this force by the distance of this force from the axis of rotation. Read also: What values ​​should be favored in a couple?

### What is the origin of the concept of moment in mathematics?

The notion of moment in mathematics, especially in probability theory, originates from the notion of moment in physics. Let f : I → ℝ be a continuous function on an interval I (not reduced to a point) of ℝ . Given a natural integer r, the moment of order r of f is defined, subject to existence, by: