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Impregnable SVDK

· started a discussion

· 1 Months ago

t (Question: 192565.0 )

what is the difference b/w tenser and vector quantity

Question:
Moment of Interia is –
Options:
A) Vector Quantity
B) Scalar Quantity 
C) Phasor Quantity
D) Tensor Quantity
Solution:
Ans: (d) Moment of inertia is neither scalar nor vector, it is a Tensor quantity.

Knowledge Expert

· commented

· 1 Months ago

Dear Student,

A Vector is a specific type of Tensor. In particular, it is a One Dimensional Tensor. A Vector gives you a magnitude and a Direction. A Two Dimensional tensor such as the stress tensor will give you a magnitude and two directions for instance The stress tensor gives you the direction of a force and the orientation of the surface area it is acting on.

In simple terms:

A vector has both direction and magnitude and obeys the laws of vector addition.

Eg:- Force.

A tensor have both magnitude and direction, but doesn't obey the laws of vector addition.

Eg:-Time,Electric Current. the surface area it is acting on.

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