Wouldn't the space station still experience a force of gravity when it's in orbit? That is exactly what the satelitte experiences and it is in orbit in question 2. Plus if something is in free fall, there has to be a force of gravity.
I should have been more clear earlier. I meant why is the force of gravity on the astronaut in the space station not included in the centripetal force for that question.
That g is for the astronaut's normal force on earth. The question says that what period must be for the Fn on the astronaut to be 60% of his weight on earth. Thus 0.6 mg is the Fn.
Homework Statement
I'm not asking for a full on solution to my question, but instead wanted to know what was the difference in these two questions. So, here are the two questions
1) A space station of radius 90 m is rotating to simulate a gravitational field.
What is the period of the space...