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Kunti Vicky Hari
Asked: 2022-11-07T16:17:57+05:30 In:

A steel wire 2mm in diameter is stretched between two clamps, when its temperature is `40^@C` Calculate the tension in the wire, when its temperature falls to `30^@C` Given, coefficient Y for steel ` = 21 xx 10^(11) dyn e//cm^2`

A steel wire 2mm in diameter is stretched between two clamps, when its temperature is `40^@C` Calculate the tension in the wire, when its temperature falls to `30^@C` Given, coefficient Y for steel ` = 21 xx 10^(11) dyn e//cm^2`
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  1. Correct Answer – `7.26xx 10^6dyn e`
    `Delta l = l alpha(theta_2- theta_1)`
    ` = lxx(11 xx 10^(-6))xx (40 – 30)cm.`
    `Now, F = (Y A Delta l)/(l) = (Ypi r^2 Delta l)/(l)`

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Sheetal Nadkarni
Asked: 2022-11-06T06:05:41+05:30 In:

A steel wire 2mm in diameter is stretched between two clamps, when its temperature is `40^@C` Calculate the tension in the wire, when its temperature falls to `30^@C` Given, coefficient Y for steel ` = 21 xx 10^(11) dyn e//cm^2`, coefficient for steel= 11 x 10^(-6).

A steel wire 2mm in diameter is stretched between two clamps, when its temperature is `40^@C` Calculate the tension in the wire, when its temperature falls to `30^@C` Given, coefficient Y for steel ` = 21 xx 10^(11) dyn e//cm^2`, coefficient for steel= 11 x 10^(-6).
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  1. Correct Answer – `7.25xx10^(6)` dyne

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