A 52 kg astronaut orbits about the earth. His gravitational force of attraction is determined to be 480 N. Calculate the gravitational field strength at this point in space. Circular Motion und Gravitation ow all work: Include your equations, substitution and units chart below contains several constant and data which may be used in the following problems. A 0.70-kg mass swing in a horizontal circle of .60 meter radius, held in by the tension in the ring tied to it. If the maximum tension the string 52 kg astronaut orbits about the gravitational force of attraction is the to be 480 N. Calculate the gravitation