1. Here is the equation http://i.imgur.com/EKdWnws.png 2. The attempt at a solution The first part I've done correctly. So here's my thought process: To get the period I used T=2 * pi * sqrt(r3 /GM_E) T=5521s W(angular velocity)=2pi/T W=1.138*10-3 rad/s V=WR where r is 6754000m V=7686m/s Since the thrusters double the speed of the satellite v will be become twice that and the radius will be 15.9% more. Therefore: 2V=W(R+R*15.9/100) Substituting in all the values I had to get W my answer was 1.964*10-3 rad/s. But I didn't get my answer right. I may have done the wrong process but it seems pretty logical from my perspective. Please enlighten me.