Question

Inertia is a scalar or a vector quantity, justify ​

Answer 1

Answer:

Hi your answer is as follows

Explanation:

Moment of Inertia is a tensor quantity which means it behaves as scalar and sometimes it behaves as vector quantity

Reason :

Moment of inertia is the property where body resists change in its state of rotatory motion.

Inertia is a measure of mass so it is scalar quantity.

But an object in rotatory motion will change its direction every point to point . Hence it is also vector quantity.

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Answer 2

Answer:

Inertia is neither a vector quantity nor a scalar quantity but it is a tensor.

Tensors are most easily understood by discussing the progression of tensor 'ranks'. Generally when one talks about tensors, though, one is referring to tensors of rank two or higher. A scalar quantity is simply a number -- it has only magnitude. A scalar can be designated a tensor of rank zero.