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For steel the breaking stressis 6xx10^(6...

For steel the breaking stressis `6xx10^(6)N//m^(2)` and the density is `8xx10^(3)kg//m^(3)`. The maximum length of steel wire, which can be suspended witout breaking under its own weight is `[g=10m//s^(2)]`

A

140 m

B

120 m

C

75 m

D

200 m

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The correct Answer is:
C
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MOTION-ELASTICITY-EXERCISE -3
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  2. A wire of cross-sectional area 3 mm^(2) is first stretched between two...

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  3. For steel the breaking stressis 6xx10^(6)N//m^(2) and the density is 8...

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  4. The units of modulus of rigidity are

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  5. A 2m long rod of radius 1 cm which is fixed from one end is given a tw...

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  6. A ball falling in a lake of depth 200 m shows 0.1% decrease in its vol...

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  7. An iron wire of length 4 m and diameter 2 mm is loaded with a weight o...

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  8. The dimensional formula for young's modulus is

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  9. A fixed volume of iron is drawn into a wire of length l. The extension...

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  10. A mass of 0.5 kg is suspended from wiere, then length of wire increase...

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  11. If the strain in a wire is not more than 1//1000 and Y =2xx10^(11)N//m...

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  12. A wire of length L and radius r is fixed at one end. When a stretching...

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  13. How much force is required to produce an increase of 0.2 % in the leng...

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  14. If the interatomic spacing in a steel wire is 2.8xx10^(-10)m. And Y("s...

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  15. The load versus elongation graph for four wires of the same material a...

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  16. The mean distance between the atoms of iron is 3xx10^(-10) m and inter...

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  17. The area of cross section of a steel wire (Y=2.0 xx 10^(11) N//m^(2)) ...

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  18. For a given material the Young's modulus is 2.4 times that of its ri...

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  19. The diameter of a brass rod is 4 mm and Young's modulus of brass is 9 ...

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  20. The poisson's ratio cannot have the value

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