1. The problem statement, all variables and given/known data A mass on a long elastic cord oscillates with an amplitude of 23 cm. If the energy of this system is reduced by fiction to half its value, what will be its amplitude? 2. Relevant equations Looking though my book or resources on the internet have not revealed a path for this one: I assume I have Ai= 23 cm. E0 = 1/2KAi2et0/T is the assumption of the equation i am starting with and I am looking for .5E0 so I can find Af 3. The attempt at a solution The starting logic is not coming together and any help would be appreciated.