“An astronaut is on board the International Space Station orbiting at an altitude of 4.00.10^2km above the Earth (the radius of the Earth is 6371km).
Calculate the orbital velocity and orbital period of the ISS, assume that g=9.81 m/s^2.”
I’ve calculated the orbital velocity as 8150m/s however I’m a little stuck at trying to calculate the orbital period. At first I decided to let the orbital period equal to time so using the angular velocity formula, time should be the change in angle divided by the angular velocity. I know that a full circle is 2 pi so the end formula to get my orbital period should be 2 pi divided by the angular velocity.
But I can’t seem to calculate the latter? Any clues on how to start?