A bicycle wheel (mass 3 kg, radius 0.5 m) is spinning at a constant angular speed. It is situated horizontally, and a beetle (5 g) is sitting on the rim. The beetle is traveling at a speed 2 m/s. Use g = 10 m/s2.
In the following diagrams, the wheel is viewed almost from the side, so that "down" is toward the bottom of the page. Which is the best force diagram?