Qiets start our experiments with the Sun and the Earth. Run the simulation and observe how cavitational force changes as the Earth orbits around the Sun. (a) Describe your observations using Newton's law of universal gravitation. (b) Pause the simulation, and double the mass of the star. How does that affect the gravitational force? (c) Click on the path and then run the simulation and observe how the gravitational force changes when the Earth rotates around the Sun. Explain your observations using equations from Chapter 13 of the textbook. (d) First, reset the simulation then pause it. Double the mass of the Earth. How does that affect the gravitational force? (e) Turn the path on and then run the simulation and observe how the gravitational force changes when the Earth rotates around the Sun. Explain your observation