Why are length, mass and time …
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Posted by Aadya Singh 4 years, 1 month ago
- 4 answers
Yogita Ingle 4 years, 1 month ago
Normally each physical quantity requires a unit or standard for its specification, so it appears that there must be as many units as there are physical quantities. However, it is not so. It has been found that if in mechanics we choose arbitrarily units of any three physical quantities we can express the units of all other physical quantities in mechanics in terms of these. So, length, mass and time are chosen as base quantities in mechanics because
(i) Length, mass and time cannot be derived from one another, that is these quantities are independent.
(ii) All other quantities in mechanics can be expressed in terms of length, mass and time.
Sulinder Kumar 4 years, 1 month ago
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Aadya Singh 4 years, 1 month ago
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