7. How much energy is stored in a rubberband that is stretched 0.5 meters if the spring coefficient of the rubberband is 2.2 N/m?*
Answer?

0.275J

Explanation:

Given parameters:

Extension  = 0.5m

Spring coefficient  = 2.2N/m

Unknown:

Energy stored in the rubberband  = ?

Solution:

The elastic potential energy is given as:

  Elastic potential energy  = k e²  

 k is the spring constant

e is the extension

         Elastic potential energy  =  x 2.2 x 0.5²  = 0.275J

are there answer choices to this question? this seems like a question where you have options to choose from.

force required to detach it is given by

charges are taken to be fundamental charge

now we have

so above is the minimum distance at which it will detach