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Question-1. What Is Moment of Inertia?

Answer-1: A moment of inertia refers to the force needed to cause a rotating object to change speeds.

Question-2. Explain Radius of gyration?

Answer-2: Radius of gyration of a body about an axis, it is the effective distance from its axis where whole mass can be assumed to be concentrated so that the moment of inertia remains the same.

Question-3. What is Inertia?

Answer-3: Inertia is a tendency of all objects and matter in the universe to remain still, or, if moving, to continue moving in the same direction unless acted on by some outside force.

Question-4. What is Polar moment of inertia?

Answer-4: The polar moment of inertia is used to calculate the angular displacement of an object subjected to a torque. It can be defined as a quantity that predicts an object's ability to resist torsion, in objects with an invariant circular cross section and no significant warping or out-of-plane deformation.

Question-5. What is difference between polar moment of inertia and moment of inertia?

Answer-5: Polar moment of inertia of an area is a quantity used to predict an object's ability to resist torsion. Moment of inertia, also called mass moment of inertia or the angular mass, (SI units kg m2, Imperial Unit slug ft2) is a measure of an object's resistance to changes in its rotation rate.

Question-6. What is different between inertia and moment of inertia?

Answer-6: The ability of a body to maintain its state, either in motion or in rest position against any external force is called Inertia while the moment of inertia is defined as the measure of an object's resistance to any change in its state of rotation.

Question-7. Is there a relation between inertia and friction?

Answer-7: Inertia is a characteristic of an object that resists change in motion,while Friction occurs when two surfaces are in contact

Question-8. what's the difference between moment of inertia and mass moment of inertia?

Answer-8: Moment of inertia = mr * 2, Mass of moment of inertia=mr*4 moment of inertia is rotation about any axis of that area but mass moment of inertia is rotation about centre of mass.

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