| Acceleration of objects in uniform circular motion | Objects in uniform circular motion have a non-zero acceleration, because direction changes, which means that velocity changes, and acceleration is the time rate of change of an object's velocity. |
| Directions of the velocity and acceleration in uniform circular motion. | When an object is in uniform circular motion, the velocity is always tangent to the circle in which the object is traveling. The acceleration, however, is always directed into the circle, along the radius. |
| Force and torque in uniform circular motion | In uniform circular motion, there is a force parallel to the lever arm. This means that there is a force directed towards the centre of the circle in which the object moves. Because the force is parallel to the lever arm, there is no net torque, because torque requires a force perpendicular to the lever arm. |
| Rotational equilibrium in uniform circular motion | Since the sum of the torques in uniform circular motion is zero, the object in motion will be in rotational equilibrium. |
| Centripetal force in uniform circular motion | The centripetal force is directed toward the centre of the circle in which the object moves, and is necessary for any kind of circular motion. |
| Centripetal Force | The force that is necessary for any kind of circular motion |
| Centrifugal force | Isn't a real force at all. Don't confuse it with centripetal force. |
