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A wire is suspended by one end. At the o...

A wire is suspended by one end. At the other end a weight equivalent to 20 N force is applied. If the increase in length is 1.0 mm, the increase in energy of the wire will be

A

0.01 J

B

0.02 J

C

0.04 J

D

1.00 J

Text Solution

Verified by Experts

The correct Answer is:
a
Increase in energy `= (1)/(2) xx 20 xx 1 xx 10^(-3) = 0.01 J`
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MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-ELASTICITY -EXERCISE 1
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  5. A 1 m long steel wire of cross-sectional area 1 mm^(2) is extended 1 m...

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  6. Two wire of same material and same diameter have lengths in the ratio ...

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  7. If in a wier of Young's modulus Y, longitudinal strain X is produced, ...

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  8. A wire suspended vertically from one of the its ends is stretched by a...

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  10. Two wires of equal lengths and cross-sections are suspended as shown i...

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  12. Wires A and B are made from the same material. A has twice the diamete...

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  13. Two wires of the same material and length but diameters in the ratio 1...

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  14. A metal rod of Young's modulus 2 xx 10^(10) Nm^(-2) undergoes elastic ...

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  15. A 45 kg boy whose leg bones are 5 cm^(2) in area and 50 cm long falls ...

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  16. Two wires A and B of same length and of the same material have the res...

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  17. If the work done in stretching a wire by 1 mm is 2J, then work necessa...

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  18. In above question, the work done in the two wire is

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  19. A material has Poisson's ratio 0.50. If a uniform rod of it suffers a ...

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  20. A rigid bar of mass M is supported symmetrically by three wires each o...

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