AP EAMCET202420 May 2024Morning ShiftPhysicsMechanical Properties of SolidsActual
When the load applied to a wire is increased from 5 kg wt to 8 kg wt , the elongation of the wire increases from 1 mm to 1.8 mm . The work done during the elongation of the wire is (Acceleration due to gravity =10 ~ms ⁻² )
Options
- A47 10⁻³ ~J
- B72 10⁻³ ~J
- C25 10⁻³ ~J
- D97 10⁻³ ~J
Correct answer
A. 47 10⁻³ ~J
Step-by-step solution
The work done during elongation is w = U = U ₂- U ₁= 1 2 ~F ₂ x ₂- 1 2 ~F ₁ x ₁= 1 2 (8 1.8-5 1) 10 10⁻³=47 10⁻³ ~J