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valina [46]
2 years ago
15

WARNING: when people put links in the answer it is a virus DO NOT DOWNLOAD IT

Engineering
2 answers:
inn [45]2 years ago
8 0
Thank youuuu!!!!!!!!!!!!
kobusy [5.1K]2 years ago
6 0

Answer:

Thank you for this!

Explanation:

I was about to click it on a question I saw.

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A steel rod, which is free to move, has a length of 200 mm and a diameter of 20 mm at a temperature of 15oC. If the rod is heate
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Explanation:

thermal expansion ∝L = (δL/δT)÷L ----(1)

δL = L∝L + δT ----(2)

we have δL = 12.5x10⁻⁶

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δT = 115°c - 15°c = 100°c

putting these values into equation 1, we have

δL = 200*12.5X10⁻⁶x100

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L₂ = L + δ L

= 200 + 0.25

L₂ = 200.25mm

12.5X10⁻⁶ *115-15 * 20

= 0.025

20 +0.025

D₂ = 20.025

as this rod undergoes free expansion at 115°c, the stress on this rod would be = 0

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