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Why are length, mass and time chosen as ...

Why are length, mass and time chosen as fundamental quantites in mechanics ?

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Why length, mass and time are chosen as base quantities in mechanics ?

Time is a fundamental quantity

If force F , Length L and time T are chosen as fundamental quantites, the dimensional formula for Mass is

If units of length, mass and force are chosen as fundamental units, the dimensions of time would be :

If force 'F' length 'L' and time 'T' are chosen as fundamental quantities,the dimensional formula for mass is

If force F , Mass M and time T are chosen as fundamental quanties the dimensional formula for length is

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If force F, Length L and time T are chosen as fundamental quantities , the dimensioal formula for mass is

MODERN PUBLICATION-UNITS AND MEASUREMENT-REVISION EXERCISES (SHORT ANSWER QUESTIONS)
  1. Derive a relation between one parsec and one light year.

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  2. Calculate the number of light minutes in one metre?

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  3. Why are length, mass and time chosen as fundamental quantites in mecha...

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  4. How many light minutes are there in one AU?

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  5. What convention are followed while writing the scientific names ?

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  6. What is parallax method? How is it used to measure large distances?

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  7. Convert 1^(@) and 1' to radians.

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  8. Why are length, mass and time chosen as fundamental quantites in mecha...

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  9. How much longer then a microsecond is a millisecond ?

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  10. How many femto metres are there in one A.U.?

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  11. Give one example of the following : (a) Physical quantity that is di...

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  12. Explain three types of errors observed in measurement.

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  13. Write mathematical expression for absolute error and mean absolute err...

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  14. Two identical resistors of resiatance (2 pm 0.1) Omega are connected ...

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  15. The diameters of two cylinders are d(1)= (2.02 pm 0.01)cm " and " d(2)...

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  16. Differentiate between precision and accuracy with an example.

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  17. Solve the following with regard to significant figures. (a) 781 +0.5...

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  18. Compute the following with regard to significant figures. (a) 5.2xx0...

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  19. For physical quantity z, given by expression z=(gh^(1"/"2)I)/(mx^3), w...

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  20. We can reduce random errors by

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