Directions: Show your compiete solution in soiving the following problems using the law of gravitation equation. 1. Two spherical objects have masses of 200kg and 500kg. Their centers are separated by ad istance of 25m. Find the gravitational attraction between them. 2. Two spherical objects have masses of 3.1 x 105 kg and 6.5 x 103 kg. The gravitational attraction between them is 65 N. How far apart are their centers? 3. Two spherical objects have masses of 8000kg and 1500kg. Their centers are separated by a distance of 1.5m. Find the gravitational attraction between them. 4. What is the force of attraction between two people, one of mass 80kg and the other 100 kg if they are 0.5 m apart?