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If two children with masses of 16 kg and 23 kg sit in seats opposite one another what is the moment of inertia about the rotation axis?
Not enough information. You also need to know how far each of them is from the axis of rotation. Assuming that each child is point-like (for simplicity - since otherwise you would need to integrate), for each child you need to calculate the square of the distance from the axis of rotation, and multiply that by the mass. Then add the numbers for the two children together.
What else can I help you with?
What is the opposite word to inertia?
The opposite of inertia is momentum. Momentum refers to an object's resistance to changes in its velocity, whereas inertia is an object's resistance to changes in its state of motion.
What is the moment of inertia about an axis of rotation body?
The moment of inertia of a body about an axis of rotation is a measure of its resistance to rotational motion. It depends on the mass of the body and how that mass is distributed around the axis of rotation. A body with a larger moment of inertia requires more torque to rotate at the same rate as a body with a smaller moment of inertia.
What is momentum of inertia?
The momentum of inertia, also known as rotational inertia, is a measure of an object's resistance to changes in its rotational motion. It depends on the mass and distribution of mass of an object relative to its axis of rotation. A larger momentum of inertia makes it harder to accelerate or decelerate the object's rotation.
What is the door's moment of inertia for rotation on its hinges?
The moment of inertia for rotation of a door on its hinges depends on the door's mass distribution and shape. It is a measure of how difficult it is to change the door's rotational motion.
Is gravity the opposite of inertia?
No, gravity is not the opposite of inertia. Gravity is a force that pulls objects towards each other, while inertia is the tendency of an object to resist changes in its motion.
Centrifuge is to inertia as wheel is to?
rotation
What is the opposite word to inertia?
The opposite of inertia is momentum. Momentum refers to an object's resistance to changes in its velocity, whereas inertia is an object's resistance to changes in its state of motion.
What is the moment of inertia about an axis of rotation body?
The moment of inertia of a body about an axis of rotation is a measure of its resistance to rotational motion. It depends on the mass of the body and how that mass is distributed around the axis of rotation. A body with a larger moment of inertia requires more torque to rotate at the same rate as a body with a smaller moment of inertia.
Why moment of inertia is also called rotational inertia?
Because it is a measure of the "resistence" of an object to be accelerated in its rotation. An object with a big moment of inertia is more difficult to increase/decrease its angular velocity (speed of rotation), than an object with a low moment of inertia.
What is momentum of inertia?
The momentum of inertia, also known as rotational inertia, is a measure of an object's resistance to changes in its rotational motion. It depends on the mass and distribution of mass of an object relative to its axis of rotation. A larger momentum of inertia makes it harder to accelerate or decelerate the object's rotation.
What is the door's moment of inertia for rotation on its hinges?
The moment of inertia for rotation of a door on its hinges depends on the door's mass distribution and shape. It is a measure of how difficult it is to change the door's rotational motion.
Is gravity the opposite of inertia?
No, gravity is not the opposite of inertia. Gravity is a force that pulls objects towards each other, while inertia is the tendency of an object to resist changes in its motion.
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.
What word means the opposite of momentum?
Inertia.
Is rotational inertia enhanced with long legs?
Yes, having long legs can enhance rotational inertia because the mass of the legs is distributed further from the axis of rotation, increasing the moment of inertia. This can provide more stability and control in activities that involve rotation, such as gymnastics or diving.
Is the rotational inertia of your leg greater when your leg is bending or straight?
The rotational inertia of your leg is greater when your leg is straight because the mass is distributed further away from the axis of rotation. When your leg is bending, the mass is closer to the axis of rotation, resulting in a lower rotational inertia.
Can moment of inertia be negative?
No, moment of inertia cannot be negative as it is a physical quantity that represents an object's resistance to changes in its rotation. Negative values for moment of inertia do not have physical meaning.
