Firstly , a few disclaimers :
- English is not my native language so I may use the wrong technical terms. Please notify me and I will correct the question.
- As a CS major , I've only taken one class of college level Physics.
- The topic of this question seems to be somewhere in between here and Quora , I apologise if you feel this is the wrong place to ask this question.
Okay , so I had a small debate with a friend , who claims that rotating a space ship (in order to simulate gravity) would cause it to slow down. His argument was that if you had to counteract gravitational pull (from a random angle) , the fact that you have to apply a force both in the plane in which the ship rotates (to prevent the rotation from slowing down) and in the plane of the forward momentum , the force you apply may cause the ship to lose forward momentum.
My argument was that since the two planes are perpendicular at all times (due to the ship's design) , the fact that the ship is rotating has no effect on the forward momentum of the ship. The force you apply in this plane is the same as the one you would use if the ship were not rotating. I failed to explain this argument in a convincing manner.
Can you help either to prove me wrong or provide a better explanation to my argument.
(Additional info): - We are assuming a cylinder-like ship with perfect weight distribution , an even number of equidistant thrusters for rotation
- this debate was started by the movie 'Interstellar' (specifically if it's better to rotate an entire ship or just the sleeping pods to simulate gravity)
- There is no bet involved (I wouldn't be asking for help otherwise)