Write down the differences between mass and moment of inertia?
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Answers
Answer:
The mass of a body usually refers to its inertial mass.
The moment of inertia is dependent on the mass of a body. However, they are not same.
Rotational mechanics works with rotation and circular motion whereas kinemeatics work linear motion. The moment of inertia can be defined as the effective mass of a body undergoing rotational or circular definition(this is not the scientific definition, it just for intuition).
The mass of a body is same everywhere. However, moment of inertia of the same body can be different. Moment of inertia depends on the axis of rotation and structure of the body. Inertial mass is same for a particular body no matter what.
Explanation:
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Explanation:
Mass:
Mass is both a property of a physical body and a measure of its resistance to acceleration (a change in its state of motion) when a net force is applied.An object's mass also determines the strength of its gravitational attraction to other bodies.
The basic SI unit of mass is the kilogram (kg). In physics, mass is not the same as weight, even though mass is often determined by measuring the object's weight using a spring scale, rather than balance scale comparing it directly with known masses. An object on the Moon would weigh less than it does on Earth because of the lower gravity, but it would still have the same mass. This is because weight is a force, while mass is the property that (along with gravity) determines the strength of this force.
Moment of Inertia:
The moment of inertia, otherwise known as the mass moment of inertia, angular mass or rotational inertia, of a rigid body is a quantity that determines the torque needed for a desired angular acceleration about a rotational axis; similar to how mass determines the force needed for a desired acceleration. It depends on the body's mass distribution and the axis chosen, with larger moments requiring more torque to change the body's rate of rotation.
Difference:
- The mass of a body usually refers to its inertial mass.
The moment of inertia is dependent on the mass of a body. However, they are not same.
- Rotational mechanics works with rotation and circular motion whereas kinemeatics work linear motion. The moment of inertia can be defined as the effective mass of a body undergoing rotational or circular definition(this is not the scientific definition, it just for intuition).
The mass of a body is same everywhere. However, moment of inertia of the same body can be different. Moment of inertia depends on the axis of rotation and structure of the body. Inertial mass is same for a particular body no matter what.