General Knowledge - Physics - Discussion
Discussion Forum : Physics - Section 1 (Q.No. 35)
35.
Moment of inertia is
Discussion:
64 comments Page 1 of 7.
Chandurani said:
10 years ago
When I took classical mechanics we were given definitions for an object's moment of inertia, which I understand to be a scalar quantity that describes that objects tendency to resist rotation about a fixed axis either about, or some distance from its center of mass.
I was recently reading about how an object's moment of inertia can also be described as a tensor quantity when the axis of rotation is not fixed, but arbitrary.
I was recently reading about how an object's moment of inertia can also be described as a tensor quantity when the axis of rotation is not fixed, but arbitrary.
Manohar said:
1 decade ago
Physical quantities that vary in two different directions are properly described as tensors. I like to visualize tensors as the surface of a cube (similar to visualizing a vector as an arrow) : each face of the cube has 3 directions associated with it- one normal, and two tangential.
Radhika said:
9 years ago
When there is no direction , only magnitude , M.I. is considered as a scalar.
When there is one direction & magnitude , it is a vector.
And when there are different magnitudes in diff. directions, it is a tensor(having more than one direction)
Hope its clear now.
When there is one direction & magnitude , it is a vector.
And when there are different magnitudes in diff. directions, it is a tensor(having more than one direction)
Hope its clear now.
BKS said:
4 years ago
In classical mechanics, the moment of inertia is also known as angular mass. By this, you can identify whether the angular mass is scalar or vector and the same goes for a moment of inertia. The answer is yes, the moment of inertia is a scalar quantity.
Kavya said:
9 years ago
Moment of inertia is neither a scalar, nor a vector.
Some physical quantities which are neither scalars nor vectors which is called as 'tensors'.
So, Moment of inertia, pressure, stress, density, dielectric current, density, etc. are tensors.
Some physical quantities which are neither scalars nor vectors which is called as 'tensors'.
So, Moment of inertia, pressure, stress, density, dielectric current, density, etc. are tensors.
Hitendra said:
1 decade ago
Scalar and vector quantities are also tensor quantities.
Scalar is a zero order tensor while vector is first order tensor.
Stress is a tensor quantity as it requires different planes to define it therefore Moment of inertia is also a tensor.
Scalar is a zero order tensor while vector is first order tensor.
Stress is a tensor quantity as it requires different planes to define it therefore Moment of inertia is also a tensor.
D.S.Teja said:
1 decade ago
Tensors are geometric objects that describe linear relations between vectors, scalars, and other tensors. Examples of such relations include the dot product, the cross product, and linear maps. Vectors and scalars themselves are also tensors.
Arav said:
1 decade ago
Tensors are geometric objects that describe linear relations between vectors, scalars, and other tensors. Example strain (strain is defined as the elongation in the direction of force) where force is scalar and is applied in the direction.
S.ABHAY CHAKRA said:
1 decade ago
Tensor means the bodies will produce sound i.e. if we beat them it will emit sound waves and tungsten is having highest tensor property. Only metals are applicable for tensor. I think the answer will be in scalar or vector.
Elizabeth said:
10 years ago
Tensors are the physical quantities that have different magnitudes and different directions at a point.
E.G: Moment of inertia of a disc (along the diameter and perpendicular to the diameter).
E.G: Moment of inertia of a disc (along the diameter and perpendicular to the diameter).
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