IAT IISER2017PhysicsMechanical Properties of Solids
A Copper wire of length L_ Cu , Young's modulus Y_ Cu , and diameter d is hung from the ceiling. An Aluminium wire of length L_ Al , Young's modulus Y_ Al , and of same diameter d is joined end-to-end at the free end of the Copper wire. If under the action of a load applied at the free end of the Aluminium wire the net elongation is L , the applied load is
Options
- Ad^2 L (Y_ Cu L_ Al -Y_ Al L_ Cu ) 4 L_ Cu L_ Al .
- Bd^2 L (Y_ Cu L_ Al +Y_ Al L_ Cu ) 4 L_ Cu L_ Al .
- Cd^2 Y_ Cu Y_ Al L 4 (Y_ Cu L_ Al +Y_ Al L_ Cu ) .
- Dd^2 Y_ Cu Y_ Al L 4 (Y_ Cu L_ Al -Y_ Al L_ Cu )
Correct answer
C. d^2 Y_ Cu Y_ Al L 4 (Y_ Cu L_ Al +Y_ Al L_ Cu ) .
Step-by-step solution
No solution available.