a
\(\,mg(h\,\, + \,\,x)\,\, = \,\,\frac{1}{2}k{x^2}\,\,\,.......(\,1\,)\) અને \(mg(h'\,\, + \,\,x')\,\, = \,\,\frac{1}{2}k{{x'}^2}\,\,\,\,\,.............(2)\)

સમીકરણ \((1) /\) સમીકરણ \((2)\) પરથી 

\(\frac{{h\,\, + \,\,x}}{{h'\,\, + \,\,x'}}\,\, = \,\,\frac{{{x^2}}}{{{{x'}^2}}}\,\,\, \Rightarrow \,\,\frac{{0.24\,\, + \,\,0.01}}{{h'\, + \,\,0.04}}\,\, = \,\,{\left( {\frac{{0.01}}{{0.04}}} \right)^2}\,\,\,\)

\( \Rightarrow \,\,\,\frac{{.25}}{{h'\, + \,\,0.04}}\,\, = \,\,\frac{1}{{16}}\,\,\, \Rightarrow \,\,h'\,\, + \,\,0.04\,\, = \,\,4\,\,\, \Rightarrow \,\,h'\,\, = \,\,4\,\, - \,\,0.04\,\, = \,\,3.96\,\,m\)