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Moment of Inertia of a disk (I) = 1/2MR2

Moment of Inertia of a disk (I) = 1/4MR2

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What is the formula for calculating the moment of inertia of a disk?

The formula for calculating the moment of inertia of a disk is I (1/2) m r2, where I is the moment of inertia, m is the mass of the disk, and r is the radius of the disk.


What is the moment of inertia of a disk about the edge?

The moment of inertia of a disk about its edge is equal to half of the mass of the disk multiplied by the square of its radius.


What is the moment of inertia for a uniform disk?

The moment of inertia for a uniform disk is given by the formula I (1/2) m r2, where m is the mass of the disk and r is the radius of the disk.


Why does the solid disk have a greater moment of inertia than the solid sphere, and how can this difference be explained?

The solid disk has a greater moment of inertia than the solid sphere because the mass of the disk is distributed farther from the axis of rotation, resulting in a larger rotational inertia. This difference can be explained by the parallel axis theorem, which states that the moment of inertia of an object can be calculated by adding the moment of inertia of the object's center of mass and the product of the mass and the square of the distance between the center of mass and the axis of rotation.


What is the moment of inertia of a hollow disk?

The moment of inertia of a hollow disk is given by (1/2) * m * (r_outer^2 + r_inner^2), where m is the mass of the disk, r_outer is the outer radius, and r_inner is the inner radius. This formula accounts for the distribution of mass around the central axis of the disk.

Related Questions

What is the formula for calculating the moment of inertia of a disk?

The formula for calculating the moment of inertia of a disk is I (1/2) m r2, where I is the moment of inertia, m is the mass of the disk, and r is the radius of the disk.


What is the moment of inertia of a disk about the edge?

The moment of inertia of a disk about its edge is equal to half of the mass of the disk multiplied by the square of its radius.


What is the moment of inertia for a uniform disk?

The moment of inertia for a uniform disk is given by the formula I (1/2) m r2, where m is the mass of the disk and r is the radius of the disk.


Why does the solid disk have a greater moment of inertia than the solid sphere, and how can this difference be explained?

The solid disk has a greater moment of inertia than the solid sphere because the mass of the disk is distributed farther from the axis of rotation, resulting in a larger rotational inertia. This difference can be explained by the parallel axis theorem, which states that the moment of inertia of an object can be calculated by adding the moment of inertia of the object's center of mass and the product of the mass and the square of the distance between the center of mass and the axis of rotation.


What is the moment of inertia of a hollow disk?

The moment of inertia of a hollow disk is given by (1/2) * m * (r_outer^2 + r_inner^2), where m is the mass of the disk, r_outer is the outer radius, and r_inner is the inner radius. This formula accounts for the distribution of mass around the central axis of the disk.


What is the moment of inertia of a circular disk rotating about an axis if the mass is m and radius is r?

The answer will depend on whether the axis isthrough the centre of the disk and perpendicular to its plane,a diameter of the disk, orsome other axis.Unless that information is provided, the answer is meaningless.


Which will have the greater rolling down an incline- a hoop or a solid disk?

A solid disk will roll faster down an incline compared to a hoop because more mass is concentrated at the center of the disk, which increases its rotational inertia and supports the rolling motion. The distribution of mass in a hoop is more spread out, leading to lower rotational inertia and a slower rolling speed.


What is the difference between mass moment of inertia and area moment of inertia?

Mass moment of inertia measures an object's resistance to rotational motion due to its mass distribution, while area moment of inertia measures an object's resistance to bending due to its shape and cross-sectional area. Mass moment of inertia depends on both the mass and its distribution, while area moment of inertia depends on the shape and how the material is distributed in the cross-section.


Why is moment of inertia of a solid disc smaller than that of a ring?

Moment of inertia depends upon the distribution of mass with respect to the axis of rotation.The greater the distance between the bulk of an object's mass and the axis of rotation, the greater the moment of inertia will be. A solid disk has its mass distributed evenly across its diameter, while a ring has its mass concentrated furthest from the centre of rotation.


How to calculate the moment of inertia for a given object?

To calculate the moment of inertia for an object, you need to know its mass distribution and shape. The formula for moment of inertia varies depending on the shape of the object. For simple shapes like a rod or a disk, there are specific formulas to use. For more complex shapes, you may need to use integration to calculate the moment of inertia.


What is the formula for calculating the mass moment of inertia of a rectangle?

The formula for calculating the mass moment of inertia of a rectangle is I (1/12) m (a2 b2), where I is the mass moment of inertia, m is the mass of the rectangle, and a and b are the dimensions of the rectangle.


Does the moments of Inertia change if center of mass change?

No, the moment of inertia of an object does not change with a change in its center of mass. The moment of inertia depends on the mass distribution and shape of an object, not its center of mass.