To show and then play a movie, click on the arrow or the movie title/description. Repeat to hide it.

UCF L3 Movie 1: Fan pushes cart with friction pad gently lowered (moderate friction)

UCF L3 Movie 2: Fan pushes cart with friction pad firmly lowered (high friction)

UCF L3 Movie 3: After cart is given a quick push, fan pushes cart with friction pad firmly lowered (high friction)