# Circular Motion Problem

## Homework Statement

A space station has a radius of 200 meters. An astronaut has a mass of 55 kilograms and the station rotates at 1.5 rev/min. What is the period of rotation for the station?

## Homework Equations

$$\tau$$=2$$\pi$$r/v
a=v2/r
Fg=mg
FNET=ma

## The Attempt at a Solution

I think the FNET equation is Fsp=ma and I'm pretty sure you have to solve for $$\tau$$ but in order to do that I need to solve for a. How do I either find a velocity or acceleration to do this?

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kuruman
Homework Helper
Gold Member
Time out. This is not a Newton's Second Law problem. Just think. If the station does 1.5 revolutions in one minute, what is the period, i.e. how long does it take to make one revolution?

Would you just have to set it up as a proportion and find that it takes 1.5 seconds to make one revolution?

kuruman