1. when you have different masses for each sphere, how does the force that the larger mass sphere exerts on the smaller mass sphere exerts on the larger mass sphere?
2. what happens to the force between the two spheres of the same mass when the distance between the mass sphere is halved?
3. the force of attraction between 2 objects is called gravity. what do you think about an object, like your notebook, pull towards you? explain your reasoning.