while driving bicycle we balances it but if it stands in rest position ,we can't balance it. why?

Answer 1

Any object which is lying at a spot has a centre of gravity. If it is perfectly balanced it will continue to stand without falling unless it is acted upon by an external force. When it is standing by itself every small swirl in the air will disbalance it and it will fall because the centre of gravity will be shifted to one side and because gravity is attracting the bycycle - by Pascals Law - it will transmit the Gravitational Pressure equally in all directions and the bycycle will fall even with a very very small tilt.
Now consider a moving bike. The inner ear of the rider has 3 small bones - the hammer, stirup and the anvil partially immersed in a fluid which maintains it level like water. Any tilt in the bike will tilt the rider. The body of the rider will immediately send signals to the rider to tilt his body in the opposite direction to maintain perfect equilibrium and balance. The body will immediately lean towards the other side of the tilt and the bike will also be tilted away from the tilt towards the centre of gravity and so the rider is the person who leans his body from side to side and keeps the center of gravity straight and prevents falling - SO PLAY A RIDE BY THE EAR - Ha Ha!

Answer 2

Ken has the right phenomenon. I am not sure what in the heck some of the others are talking about.

Anyway, the gyroscopic effect comes from the physics principle of "conservation of angular momentum". This is similar to the more familiar linear momentum version (eg: pool ball hits another pool ball but the initial momentum is still conserved within the system). Angular momentum is defined as mass spinning with a certain speed about an axis and points in the direction of the axis of rotation by the right hand rule.

So, for the bicycle example:
1) When it is just standing still in the upright position, it is hard to balance. The center of mass can easily tip away from the position over the wheels and the bike falls over.

2) In the case where the bike is moving, a decent amount of angular momentum is emodied in the rotating wheels. By conservation of angular momentum, the wheels tend to maintain their angular momentum magnitude and direction; the wheels tend to keep rotating and maintain their axis of rotation horizontal with the ground. Thus, the angular momentum helps keep the center of mass of the bike over its wheels, maintaining balance. Neat, eh? See the wikipedia article or search for angular momentum for more in depth (mathematical) explanations.

Answer 3

Does being to stability/experience/steer a bicycle mean you would be waiting to shelter a motorbike? of path no longer - even with the indisputable fact that i became waiting to circulate from one to the different without a situation. yet turn the question - do you think of you would be waiting to stability/experience/steer a motorbike in case you are able to no longer experience a bicycle? No way! The recommendations are an identical, purely the burden is diverse. Get solid on a bicycle (or moped perhaps) first. greater useful to hit some thing or fall off a motorbike at 15 mph than to do an identical on a motorbike at 50.

Answer 4

Rotating wheels stabilise the bike. The faster they rotate, the more difficult it becomes to tip them out of the plane in which they are rotating.

This becomes especially clear when driving a motorbike. If you want to turn right, you have to pull at the left side(!) in order for the bike to 'fall' to the right and thus taking a bend to the right.

Answer 5

Speed helps with balance

Answer 6

while cycling we're in motion. this supports the balancing act. when at rest we can't possibly stand perpendicular to the surface of the earth, as the gravitational force of earth acts and pulls anything which is not perpendicular. we get tilted towards the ground because of our weight or the weight of the cycle .hence the reason. god bles u. byeeeee.........

Answer 7

Gyroscopic action of the wheels. Due to the curvature of the front fork, leaning the bike over causes the front wheel to "Precess" and rotate into the direction of the turn.

Answer 8

just as u need practice to balance while riding,ull hav 2 practice 2 balanc in standing pos too

Answer 9

the two tyres act as stabalizers becuae of the Centrifugal force, so the faster you go the more stable you become, unless your tyres are unballanced then when you hit a certain speed you get a "speed" wobble

Answer 10

You could, if you were VERY patient and took the time to make minor adjustments in it's position. You would have to be VERY SLOW & PRECISE in your movements until it was postioned just right.