hello guys, today coolknowledge is
going to share about moment of inertia of a rigid body. When we talk about
moment inertia there are two famous cases appear in our mind. They are the
moment inertia of Sphere and moment inertia of Cylinder.
There are two objects, one of the small mass objects and other
objects has a greater mass. Which objects are easier to move when driven with
the same style? The fact indicates that the object whose mass is smaller easier
to move than the object whose mass is greater. So big or small mass of the
object is large or small acceleration determines the motion of objects if
worked on a style. If in a straight motion, the mass of an object determines
whether easy or difficult to be moved (accelerated), then the rotational
motion, moment of inertia of an object to determine whether an object is easy
or difficult to move. To better understand the definition of the moment of
inertia, learned explanations below.
The
moment of inertia is a measure of the inertia of an object to rotate on its
axis. This measurement is analogous to the rotation rather than the masses. The
moment of inertia plays a role in rotational dynamics as mass in basic
dynamics, and determining the relationship between angular momentum and angular
velocity, moment of force and angular acceleration, and several other
quantities. Although the discussion of the scalar moment of inertia, discussion
tensor approach allows the analysis of more complex systems such as gyroscopic
motion. Therefore before we discuss more about these two cases, we gotta know
first about the moment inertia of a rigid body itself.
Moment of force is a form of business with one point as a
reference point. For example, children playing seesaw, with the pivot point of
reference is a seesaw. In the rotating pulley because rubbing against the rope
is pulled and connected to a load.
Moment of force is the product of the force and direction of the
line of work the shortest distance to the fulcrum. Moment of force is often
referred to as torque or torque.
Moment inertia of a rigid body can be determined as follows:
By knowing the formula of moment inertia of a rigid body,
now we can determine the moment inertia of Sphere and Cylinder as follows:
Now, you can
understand well and easily about moment inertia of a rigid body and you can see
clearly the implementation in your daily life. See you in the next subject.