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What is the percentage increase in the length of a wire of diameter 2.5 mm, stretched by a force of 100 kg wt?

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Q. What is the percentage increase in length of a wire of diameter 2.5 mm, stretched by a force of 100 kg wt? Young's modulus of elasticity of wire = 12.5 x

10^{11} d y n e / c m^{2}

Q. What is the percentage increase in length of a wire having diameter

1.5 mm

, stretched by a force of

50 kg-wt

?
(Young's modulus of elasticity of wire

(Y) = 15 \times 10^{11} {dyne/cm}^{2} and g = 10 {m/s}^{2}

)

Q. What is the percentage increase in length of a wire having diameter

1.5 mm

, stretched by a force of

5 kg-wt

?
(Young's modulus of elasticity of wire

(Y) = 15 \times 10^{11} {dyne/cm}^{2} and g = 10 {m/s}^{2}

)

Q. Calculate the percentage increase in length of a wire of diameter

2 m m

stretched by force of

1 k g

. Youngs modulus of the material of wire

15 \times 10^{10} N m^{- 1}

Q. A brass wire of diameter

1 / m m

2 / m

is stretched by applying a force of

20 / N

. If the increase in length is

0.51 / m m

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