Question

5.Two wires A and B of the same dimensions are under loads of 4 and 5.5kg respectively. The ratio of young modulus of the materials of the wires for the same elongation is

Answer 1

$$\begin{gathered} Young\text{'}smodulus: \\ Y=\frac{mgL}{Ae} \\ Hence, \\ \frac{Y_1}{Y_2}=\frac{m_1}{m_2}\left[\sin ceg,L,A,andeare\cos n\tan ts\right] \\ =\frac{4}{5.5} \\ \mathbf{=}\mathbf{8}\mathbf{:}\mathbf{11} \end{gathered}$$