The satellite’s orbit is measured from the center of the earth, so its radius will be the radius of the earth, 6.37 × 10 6 m, plus the 225,000 m. Since the centripetal force keeping this satellite tra...The satellite’s orbit is measured from the center of the earth, so its radius will be the radius of the earth, 6.37 × 10 6 m, plus the 225,000 m. Since the centripetal force keeping this satellite traveling in orbit is provided by the gravitational force of the earth, we can set the formula for centripetal force equal to the formula for gravitational force.
