1. The problem statement, all variables and given/known data How much work must be done to allow the Earth to escape the Sun? 2. Relevant equations E= K + UG where K= 1/2(mv2) and UG=-(GmM)/r W= E2- E1 Fc=mac 3. The attempt at a solution I have no idea where to start this, I missed the class where they took this up and I want to be at least familiar with it for the test.