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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).
How much greater is the inertia of a 1 kg mass to the inertia of a 4 kg mass?
4 times as great
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.
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?
Answer #1:The Rotational Inertia of an object increases as the mass "increases" and thedistance of the mass from the center of rotation "decreases".=================================Answer #2:If Answer #1 were correct, then flywheels would be made as small as possible,and a marble would be harder to spin than a wagon wheel is.An object's rotational inertia (moment of inertia) increases in direct proportionto its mass, and increases in proportion to the square of the distance of themass from the center of rotation.
Physical quantity coressponding to inertia is rotational motion?
The physical quantity for rotations corresponding to inertia is the moment of inertia, or rotational inertia. It is represented by the integral of r^2dm.
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.
The product of an object's rotational inertia and its rotational velocity is?
The object's angular momentum
What physical characteristic does the moment of inertia of a rotating object most directly and accurately measure?
This is rotational inertia. When inertia forces an object to rotate, it will continue to do so until another force acts upon it.
What does rotational inertia depend on?
Mass and radius
What is the property of an object that resists changes in rotational motion?
rotational inertiaMass moment if inertia.
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.
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.
Is the rotational inertia of your leg greater when your leg is bending or straight?
Stright
What is the rotational analog of mass in linear motion?
That is called moment of inertia.
Why moment of inertia is called rotational inertia?
That's what it's all about: about rotation. The "inertia" part is because it is comparable to the linear inertia: that's what makes it difficult to change an object's rotation.
