question_answer

A steel rod of length 25 cm has a cross-sectional area of 0.8\[c{{m}^{2}}\]. The force (in N) required to stretch this rod by the same amount as the expansion produced by heating it through \[10{}^\circ C\]is coefficient of linear expansion of steel is\[{{10}^{-5}}{}^\circ {{C}^{-1}}\]. Young's modulus of steel is\[2\times {{10}^{10}}N/{{m}^{2}}\].

Answer:

160.00