1. The problem statement, all variables and given/known data In a circular rotating room (think Gravitron), there are two blocks stacked against the wall and do not drop. Block A is touching block B, and block B is touching the wall. 2. Relevant equations 3. The attempt at a solution I know how to do this problem, but I am not sure about where to draw the friction vectors. My intuition tells me straight up, but it seems like my instructor did something different.