JEE Main 202131 Aug, Morning shiftPhysicsMediumProperties of Solids and Liquids184× since 2002
A uniform heavy rod of weight 10 kg ms^2, cross-sectional area 100 cm² and length 20 cm is hanging from a fixed support. Young modulus of the material of the rod is 2 10¹¹ Nm^2. Neglecting the lateral contraction, find the elongation of rod due to its own weight.