COMEDK2023PhysicsWork, Power and Energy
A long spring, when stretched by a distance x , has potential energy U . On increasing the stretching to n x , the potential energy of the spring will be
Options
- AU n
- Bn U
- Cn^2 U
- DU n^2
Correct answer
C. n^2 U
Step-by-step solution
Potential energy of the spring, and U^ = 1 2 k(n x)^2 U^ =n^2 1 2 k x^2 U^ =n^2 U [From Eq. (i)]