This is a classic lab done in class every year with a string, a rubber ball or stopper, washers or hanging masses to add Fgrav, and a tube. The tube is used as a place to hold the string so that it is frictionless and allows the string to rotate. Example of a In-Class Lab. This link is to a youtube video showing a teacher explaining and showing how the lab is done in her class. It is pretty close to how we would do the lab if we were doing in-person school. The lab is designed to examine the relationships between the force, mass, and radius of an object moving in a circular path and the velocity it must maintain to stay in that circular path. Open the simulation with the link above and explore the capabilities of it. https://www.thephysicsaviary.com/Physics/Programs/Labs/ClassicCircularForceLab/index.html Answer the Prelab Questions before beginning the lab: Look at Newton swinging the object in a circle, what part of the system is keeping the object moving in a circle