duction: Every physics student has had a lot of experience with the force of gravity. Unfortunately, their experience is limited to the interaction between a very large object, the Earth, and much smaller objects that are very close to it. This represents a small range of the possibilities. Software simulations of gravitational force allow physics students to explore a variety of other gravitational interactions between objects. These activities are designed to be used with the My Solar System simulation that can be found on the Physics Education Technology (PhET) website at the University of Colorado at Boulder. Directions: Go to the My Solar System simulation on the PhET website. Select the Lab option. Carefully follow the instructions for each activity below. Answer the questions, record your results, and use the simulation to check your work before going on to the next activity. The simulation can be found at the URL below or search "phet my solar": https://phet.colorado.edu/sims/html/my-solar-system/latest/my-solar-system_en.html Activity 1: Look over the start screen. The simulation controls and settings are on the right. Check the Path and Grid boxes. The simulation inputs are at the bottom left. Check the More Data box. Click Play ( ) and write down at