AP EAMCET202422 May 2024Morning ShiftPhysicsMechanical Properties of SolidsActual
The elongation of copper wire of cross-sectional area 3.5 ~mm ^2 , in the figure shown, is ( Y _ copper =10 10¹⁰ Nm ⁻² and g=10 ~ms ⁻² )
Options
- A10⁻⁴ ~m
- B10⁻³ ~m
- C10⁻⁶ ~m
- D10⁻² ~m
Correct answer
A. 10⁻⁴ ~m
Step-by-step solution
Tension in copper wire T ₂=70 ~N Elongation in copper wire, aligned & Sl = T ₂ I ₂ Y ₂ ~A ₂ & = 70 0.5 10 10¹⁰ 3.5 10⁻⁶ & =10⁻⁴ ~m aligned