Circular Motion
Video Resources for All Lab Physics Classes
Inverse Square Law - Using a proportion
Newton's Universal Law of Gravitation
Orbital Velocity and Orbital Period
Centripetal Force and Tangential Velocity Explained - Stop watching at the 4min 16 sec mark (Anything after that is for Honors only)
Video Resources for Honors Physics Classes
The instructor in the following videos draws the centrifugal force (a fictitious force) going out of the circle. This is equal to but in the opposite direction of the centripetal force. You should NOT draw the centripetal or centrifugal force when doing problems, only the other forces.
Conical Pendulum (starts at 9:00 mark after banked curve)