How does a crank bicycle work and what are its main components?

A crank bicycle works by converting the rider's pedaling motion into rotational energy that drives the wheels. The main components of a crank bicycle include the crankset, pedals, chainrings, chain, cassette, rear derailleur, front derailleur, and shifters. The rider's pedaling force is transferred through the crankset to the chainrings, which then drive the chain to turn the cassette and ultimately rotate the wheels.