Rolling Down an Inclined Plane

In this series of videos we show races of two round objects rolling down an inclined plane. See if you can predict the winners of each race and why the winning entry was successful.

• Race 1: Hollow cylinder vs solid cylinder of the same mass and radius
• Race 2: Solid sphere vs solid cylinder of same radius (this video)
• Race 3: Solid sphere vs hollow cylinder
• Race 4: Solid sphere vs unopened drink can
• Race 5: Solid sphere vs rod on wheels
• Race 6: Two solid spheres of same radius and different mass
• Race 7: Two solid spheres of different radius and different mass