MHT CET202210 Aug 2022Morning ShiftPhysicsWork, Power and EnergyActual
When a long spring of 4 ~cm is stretched by 1 ~cm , the potential energy stored in the spring is U . If it is stretched by 4 ~cm , the potential energy stored in it is
Options
- A4 U
- B16 U
- C9 U
- D25 U
Correct answer
B. 16 U
Step-by-step solution
The potential energy U relates to an extension x via, aligned & U= 1 2 K x^2 & U^ U = x^ 2 x^2 = 4^2 1^2 =16 aligned