A bimetallic strip is made of copper and steel fused togethe

A bimetallic strip is made of copper and steel fused together. The length of each piece is 23 cm at 25 Celsius and the thickness of the copper is .6mm and the steel is .8mm. a) If the temperature of the strip goes from 25 to 35 Celsius, what is the subtended angle of the arc that

Solution

Solution

Length of arc of copper strip = C_c

Lenth of arc of steel strip = C_s

C_c - C_s = L (k_c- k_s) dT

Here L = initial length of strips

Kc = co efficient of thermal expansion of copper

Ks = co efficient of thermal expansioon of steel

dT = change in temperature

Cs - Cc = 0.23 (17-13) (10^-6) (35-25)

= 9.2 micro meter