As shown in adjacent figure if a load of mass (m) is attached at lower end of wire. Then findthe displacementof the points B,C and D are as shwon infigure. (i) elongation of first wire e_(1) = ((mg)l_(1))/(AY_(1)) (ii) elongationof 2nd wire e_(2) = ((mg)l_(2))/(AY_(2)) + ((mg)l_(1))/(AY_(1)) (iii) elongation of 3rd wire e_(3) = ((mg) l_(3))/(AY_(3)) + ((mg)l_(2))/(AY_(2)) + ((mg) l_(1))/(AY_(1))

As shown in adjacent figure if a load of mass (m) is attached at lower

1.	As shown in adjacent figure if a load of mass (m) is attached at lower end of wire. Then findthe displacementof the points B,C and D are as shwon infigure. (i) elongation of first wire e_(1) = ((mg)l_(1))/(AY_(1)) (ii) elongationof 2nd wire e_(2) = ((mg)l_(2))/(AY_(2)) + ((mg)l_(1))/(AY_(1)) (iii) elongation of 3rd wire e_(3) = ((mg) l_(3))/(AY_(3)) + ((mg)l_(2))/(AY_(2)) + ((mg) l_(1))/(AY_(1))
Answer» (i) is correct (i)&(II) is correct (iii) is correct All are correct. Solution :DISPLACEMENT of `B` is `e_(1)`, displacement of `C` is `e_(1) + e_(2)` displacement of `D` is `e_(1) + e_(2) + e_(3)`