Question

how does cycle works ?

Answer 1

1 Like all machines, a bicycle makes work
easier. With a bicycle, it takes much less effort
to get to where we are going than it would if we
were walking. We can get many times farther on
a bike even though we burn the same amount of
energy.
2 Bicycles make this possible by using a
combination of simple machines and the laws of
physics. Bicycles have a number of simple
machines included in their wheels, pedals, gears,
and brakes that help the bike to move. When the
rider balances on a bike, he does so according to
the laws of physics. Even simpler parts like the
frame of a bike take science into account.
3 Two of the most important parts of any
bicycle are the wheels and the gears. On flat
ground, gears attached to the wheels increase
the distance a rider gets from one turn of the
pedals, allowing him to cover a lot of ground
quickly. On hilly terrain, gears give the rider more
power when it is needed by lessening the
distance the bike travels.

Answer 2

there are pedals in cycle which connected to the chain. if we float the pedal the power of human body convert into kinetic energy and cycle starts moving...! the best advantage of the cycle is its save the fuel and pollution free...!