Aspring that has a spring constant of 1400 n/m is stretched to a length of 2.5 m. if the normal length of the spring is 1.0 m, how much elastic potential energy is stored in the spring? 700 j 1050 j 1575 j 4375 j

1575 J

Explanation:

The elastic potential energy of a string is given by:

where

k is the spring constant

is the stretching/compression of the string with respect to its natural length

For the spring in the problem, we have:

- Spring constant:

- Stretching:

Therefore, the elastic potential energy stored in the spring is