A wire loaded by weights of density $9 \mathrm{~g} / \mathrm{cc}$ is stretched to a length 98 cm . O

Question

A wire loaded by weights of density $9 \mathrm{~g} / \mathrm{cc}$ is stretched to a length 98 cm . On immersing the weights in water, the length shortens by 2.5 mm . The original length of the wire is\

Professor PC Thomas Classes · Answer

Extension $\propto$ load Let $l$ be the original length\ $\mathrm{M}=$ the weight in air\ Case I:- Extenstion = 98- 1\ Load = M $$ 98-l \propto \mathrm{M}---------(1)$$