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A flywheel's diameter is twice that of another of the same shape and mass The larger diameter flywheel's rotational inertia is?
Wiki User
∙ 12y ago
four times the other's
Because Rotational Inertia for a flywheel with its axis through the center is I=mr^2;
I=m(2r)^2
I =m4r^2
Wiki User
∙ 12y ago
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Is angular acceleration proportional or inversely proportional to torque?
Proportional.For linear movement, Newton's Second Law states that force = mass x acceleration.The equivalent for rotational movement is: torque = (moment of inertia) x (angular acceleration).Proportional.For linear movement, Newton's Second Law states that force = mass x acceleration.The equivalent for rotational movement is: torque = (moment of inertia) x (angular acceleration).Proportional.For linear movement, Newton's Second Law states that force = mass x acceleration.The equivalent for rotational movement is: torque = (moment of inertia) x (angular acceleration).Proportional.For linear movement, Newton's Second Law states that force = mass x acceleration.The equivalent for rotational movement is: torque = (moment of inertia) x (angular acceleration).
Two masses are in the ratio 1 4 what is the ratio of their inertia?
The ratio is the same. Inertia depends entirely on mass.
How much greater is the inertia of a 1 kg mass to the inertia of a 4 kg mass?
4 times as great
What increase the moment of inertia?
A rotating body that spins about an external or internal axis (either fixed or unfixed) increase the moment of inertia.
The moment of inertia of a solid cylinder is?
the moment of inertia of a solid cylinder about an axis passing through its COM and parallel to its length is mr2/2 where r is the radius.
The rotational inertia of an object increase as the mass and the distance of the mass from the center of rotation?
Yes, the rotational inertia of an object increases with mass because there is more resistance to change in its rotational motion. Additionally, the rotational inertia increases with the square of the distance from the center of rotation, as mass distributed farther from the axis has a greater effect on the object's rotational inertia.
What physical characteristic does the moment of inertia of a rotating object most directly and accurately measure?
The moment of inertia of a rotating object most directly and accurately measures its rotational inertia, which is the resistance of an object to changes in its rotational motion. It depends on the mass distribution and shape of the object.
Physical quantity coressponding to inertia is rotational motion?
The physical quantity corresponding to inertia in rotational motion is moment of inertia. Moment of inertia is a measure of an object's resistance to changes in its rotational motion. It depends on both the mass and distribution of mass in an object.
Why moment of inertia is called rotational inertia?
Moment of inertia is often called rotational inertia because it measures an object's resistance to changes in its rotational motion. Just as inertia is the tendency of an object to resist changes in its linear motion, rotational inertia measures an object's resistance to changes in its rotational velocity.
Which has more rotational inertia a bicycle wheel or a solid disk of the same mass and diameter?
The bike wheel. It wil have its mass concentrated out by the rim.
What does rotational inertia depend on?
Rotational inertia depends on the mass of the object and how that mass is distributed relative to the axis of rotation. It is a measure of how difficult it is to change the rotational motion of an object.
What is the property of an object that resists changes in rotational motion?
rotational inertiaMass moment if inertia.
What are ways to increase inertia?
Increasing the mass of an object will increase its inertia. Also, increasing the speed at which an object is spinning will increase its rotational inertia. Additionally, increasing the distance of an object from the axis of rotation will increase its rotational inertia.
The product of an object's rotational inertia and its rotational velocity is?
The product of an object's rotational inertia and its rotational velocity is called angular momentum. It is a conserved quantity in a closed system, meaning it remains constant unless acted upon by an external torque.
What does the flywheel do?
A flywheel is a mechanical device with significant moment of inertia used as a storage device for rotational energy. Flywheels resist changes in their rotational speed, which helps steady the rotation of the shaft when a fluctuating torque is exerted on it by its power source such as a piston-based (reciprocating) engine, or when the load placed on it is intermittent (such as a piston pump). Flywheels can be used to produce very high power pulses as needed for some experiments, where drawing the power from the public network would produce unacceptable spikes. A small motor can accelerate the flywheel between the pulses. Recently, flywheels have become the subject of extensive research as power storage devices for uses in vehicles; see flywheel energy storage.
Can the mass of an object be considered as constucted at its centrer of mass for purpose of computing its rotational inertia?
No. For the rotational inertia, the distribution of masses is relevant. Mass further from the axis of rotation contributes more to the rotational inertial than mass that is closer to it.
How does rotational inertia effect if size changes but mass doesn't?
Rotational inertia is directly proportional to the mass of an object and to the square of its distance from the axis of rotation. If the size of an object changes but the mass remains the same, the rotational inertia will also change because the distribution of mass relative to the axis of rotation will change.
