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A steel wire of 1.5 m long and of radius...

A steel wire of 1.5 m long and of radius 1 mm is attached with a load 3 kg at one end the other end of the wire is fixed it is whirled in a vertical circle with a frequency 2 Hz. Find the elongation of the wire when the weight is at the lowest position `Y=2xx10^(11)N//m^(2)` and `(g=10m//s^(2))`

A

`1.77xx10^(-3)m`

B

`7.17xx10^(-3)m`

C

`3.17xx10^(-7)m`

D

`1.37xx10^(-7)m`

Text Solution

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The correct Answer is:
A
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ALLEN-ELASTICITY, SURFACE TENSION AND FLUID MECHANICS-Exercise 2 (One or more than one correct answer)
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  2. A steel wire of 1.5 m long and of radius 1 mm is attached with a load ...

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  3. A copper wire of length 3 m and area of cross-section 1mm^(2) passes t...

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  4. One end of a long metallic wire of length (L) is tied to the ceiling. ...

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  5. In determine of youggn modulus of ealsticity of wire, a force is appli...

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  6. Find out the elongation in block. If mass area of cross-section and yo...

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  9. Water rises in a capillary tube to a certain height such that the upwa...

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  10. In a U-tube diamter of two limbs are 0.5 cm and 1 cm respectively and ...

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  11. When water rises in a capillary tube of radius r to height h, then its...

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  12. There are two thin films A of liquid and B of polythene, identical in ...

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  13. A capillary of the shape as shown is dipped in a liquid. Contact angle...

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  14. The spring balance A reads 2 kg with a block m suspended from it. A ba...

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  15. A steel ball is floating in a trough of mercuty. If we fill the empty ...

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  18. A solid uniform ball having volume V and density rho floats at the int...

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  19. A sperical ball of radius r and relative density 0.5 is floating in eq...

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