The chain is wrapped around a cogwheel, which could be described as a pulley.
No, but if it runs through a rear derailer you have two pulleys there. They're small wheels where the chain changes direction.
it is not a rigid structure and while rotating it have relativity motion with other parts
of the bicycle
bicycle chain is an example of pulley
pulley
An example of simple gears is the chain, chain-wheel and free-wheel sprocket as used on a single geared bicycle. More complicated gearing is the modern bicycle's derailleur system of multiply chain-wheels, a cluster of sprockets, a chain, and gear changer mechanism.
Not the whole part of the bike but the pedals are levers a kind of simple machine it uses the levers to apply force to the sprocket sprocket is a wheel and axle ,another simple machine,that uses gears to move the chain.
A complex machine is a machine using more than one simple machine for its operation. A bicycle is a complex machine, using a lever for steering (handlebars), wheel and axle, inclined plane (the threads on bolts), and a pulley (chain on sprockets).
That isn't a simple machine, it is a complex machine, made up of other simple machines.
A machine is a tool for doing work with your hands. it is different from a simple machine. A simple machine, such as a lever, a pulley, or an inclined plane, that alters the magnitude or direction, or both, of an applied force; a simple machine. A machine is any device that transmits energy to perform or assist in the performance of human tasks. A machine is basically described as a device with moving parts that uses mechanical energy. Examples of simple machines are pulleys,a stapler,and a bicycle chain.
a pulley
A pulley isn't a kind of simple machine, it is a simple machine
In essence it is a pulley in which the chain and the wheel cannot slip with regard to each other.
A pulley
a chain
A sprocket is like a pulley, the difference being that a sprocket has gear-like teeth, to transport a chain rather than a belt. A bicycle has two sprockets, one attached to the pedals, and one attached to the rear wheel.