The main parts of a bicycle wheel are the rim, spokes, and hub.
The gears on the rear wheel are called a cassette
gears and wheel and axle
Neither of them are simple machines. A vaccum cleaner is composed of several simple machine, (I don't really know what) and a bicycle is composed of a wheel and axle (the two wheels), pulleys (the gears), and levers (Brake handles and pedals).
A three-wheel bicycle with gears offers more stability and balance than a traditional two-wheel bicycle. The gears provide easier pedaling on different terrains, making it suitable for riders of varying fitness levels. Additionally, the three-wheel design allows for a more comfortable and relaxed riding experience, especially for those with balance issues or physical limitations.
There are two main types of bicycle gears: external gears and internal gears. External gears are located on the outside of the bike's wheel and are controlled by shifting levers. Internal gears are located inside the hub of the wheel and are controlled by a twist grip or a button. Gears work by changing the ratio of the rotations between the pedals and the wheel, allowing the rider to adjust the effort needed to pedal and the speed of the bike.
Wheel and Axle to some extent for the hard drives. There are many screws that are used to hold the parts together. Pulleys and gears are in the CD-Rom Drive. I am sure there are others.
screws, levers, wedges, wheel & axles, incline plane, gears, pulleys
A bicycle consists mainly of Wheel and axles, levers, screws
A sprocket is another name for a toothed wheel that meshes with the chain.
lever at crank, connected by chain to lever at rear wheel
steering wheeltire wheelsA wagon