1. The problem statement, all variables and given/known data 2. Relevant equations a=v2/r f=mv2/r 3. The attempt at a solution I have been able to complete this first part of the question by equating 0.7g to v2/r, solving to find v then calculating T by looking at the circumference of the cylinder and using v=d/T. I'm really struggling with the next part. Do I need to calculate the force on the astronaut himself (using f=mv2/r) and perhaps use this to help with finding the apparent weight? Thanks. P.s. If anyone could explain how to make the image smaller, that would be great!