Question

An uniform steel rod of 5 sq. mm cross section is heated from 0° C to 25° C. Find the force which must be exerted to prevent it from expanding. Also find energy stored per unit volume. ( $\alpha_{steel}$ = 12 x 10⁻⁶/C, $Y_{steel}$ = 20 x 10¹⁰ N / m² ) (Ans: 300 N, 9000 J/m³ )

Answer 1

Answer:

pls refer the attachment