The P.E. of a spring is `E_(P)` when is stretched through 1cm. When stretched through 2 cm, ils P.E. is

Options

A. `E_(P)`
B. `2 E_(P)`
C. `3 E_(P)`
D. `4 E_(P)`

Answer

d

Explanation

`(U_(2))/(U_(1))=(x_(2)^(2))/(x_(1)^(2))impliesU_(2)=((2)^(2))/(1^(2))xxE_(P)=4E_(P)`