Experiment 5: Dynamics of Circular Motion (online version) OVERVIEW When an object moves in a circle, you can describe its velocity either in terms of a tangential velocity or an angular velocity. The tangential velocity of an object describes how many meters the object travels around the circle each second. The angular velocity describes how many radians (one full revolution is 2 radians) the object travels each second. In the first part of the lab, you will explore the relationship between tangential and angular velocity. Moving in a circle requires a force directed in towards the center. In the second part of the lab, you will examine the relationship between the radius of the circle, the speed of the object, and the force required to keep the object moving in a circle. You will check to see if the theoretical formula actually works