<p> Gravitation Practice</p><p>1) Calculate the weight of a 50.0 kg mass on the moon. The mass of the moon is 7.36 x 1022 kg and the radius of the moon is 1.738 x 106 m.</p><p>2) A 15.0 kg object orbits the planet Mars at an altitude of 201 km above the surface. Mars has a radius of 3.43 x 106 m and a mass of 6.34 x 1023 kg. What is the velocity of this object in orbit?</p><p>3) What is the period of the object in the previous problem?</p><p>4) At closest approach, the 722 kg Voyager 2 probe flew by Neptune at an altitude of 29,240 km. What was Voyagers weight at that moment if Neptune has a radius of 24,900 km and a mass of 9.99 x 1025 kg?</p><p>5) Calculate the force between two touching grapefruits, each with a radius of 0.0800 m and a mass of 0.450 kilograms. 6) The center of the moon and the center of the earth are 3.80 x 108 m apart. The mass of the moon is approximately 7.36 x 1022 kg, while the earth's mass is about 5.98 x 1024 kg. What is the force between these two heavenly bodies?</p><p>7) If the moon is orbiting in a circular orbit, what is the period of the moon? Use the data from the previous question to get your answer</p><p>8) A man on Venus with a mass of 90.0 kg weighs 799 N. The radius of Venus is 6.05 x 106 m. What is the mass of Venus?</p><p>9) Bubba's mass is 79.9 kg and his girlfriend Barbie-Jean's mass is 58.7 kg. What is the gravitational attraction between the the lovely couple if their centers of mass are .756 m apart?</p>