+20 POINTS!
If a spring was stretched to 2 times its normal length, the elastic potential energy in the spring would change by a factor of ___? Round to the nearest whole number.

Final elastic potential energy:

Explanation:

The elastic potential energy of a spring is given by

where

k is the spring constant

is the length of the spring

is the natural length of the spring

Therefore, for a spring at its natural length,

So its elastic potential energy is zero:

If the spring is stretched to 2 times its normal length,

Therefore its elastic potential energy would be

an obstruction

okay i have so many questions. but the big one here is: um wt..f is this mess? ?