BITSAT2010PhysicsWork, Power and EnergyActual
A long string is stretched by 2 ~cm and the potential energy is V . If the spring is stretched by 10 ~cm , its potential energy will be
Options
- AV / 25
- BV / 5
- C5 ~V
- D25 ~V
Correct answer
D. 25 ~V
Step-by-step solution
V= 1 2 k(x)²= 1 2 k(2)² or k= 2 V 4 = V 2 V ^ = 1 2 k (10)²= 1 2 ( V 2 )(10)²=25 ~V