Question

Problem - 12.22: Two straight thin bars, one of brass
and the other of steel are joined together side by side by
short steel cross-pieces at 0°C, one cm long, the centre
lines of the bars being one cm apart. When heated to
100°C, the composite bar becomes bent into the arc of
a circle. Calculate the radius of this circle. a for brass
= 19 x 10 per ºC, and a for steel = 11 x10 per °C,​

Answer 1

Answer:

Hello mate

Explanation:

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The length of steel strip after heating=L

0

steel

α

steel

ΔT

The length of brass strip after heating=L

0

brass

α

brass

ΔT

Hence the difference in length of the two=(L

0

)(α

brass

−α

steel

)ΔT

=10cm×(0.7×10

−5

/

∘

C)×30

∘

C

=2.1×10

−3

cm

Answer 2

here is the answer

Hope it helps