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the torque of his weight at the pt of contact with the ground will make him fall.and the torque of the friction acting at this point will be zero.
than which is the supporting force that prevents him from falling

2006-06-23 01:02:36 · 7 answers · asked by Anonymous in Science & Mathematics Physics

7 answers

I fall off on a turn and sometimes I fall of going straight as well. What's even worse I fall off just trying to climb onto the seat.

2006-06-23 01:54:11 · answer #1 · answered by Anonymous · 0 0

If the cyclist suddenly enters a turn, several things occur.

The cyclist feels a force tangential to the curve. This is due to iniertia (the bike wants to continue in the direction it was headed). Since the wheel is on the ground, there is a frictional force inhibiting its motion in the tangential direction. This whips the mass of the cyclist around an effective pivot, causing the cyclist to lean out of the curve.

To counteract this, the cyclist leans into the curve. At some angle of lean, dependent on the radius of curvature and radial speed, the cyclist center of gravity will be positioned such that tangential force is equal to the gravitational force pulling the cyclist to the ground.

The faster you go and the tighter the curve, the farther you have to lean to stay balanced.

2006-06-23 18:22:03 · answer #2 · answered by scott_d_webb 3 · 0 0

As the bike goes around a turn the momentum of the biker going forward pushes against the bike seat which pushes against the bike and onto the ground. Thus this force (centrifugal force) gives the bike more grip on the road, accels it, and keeps the biker up. This is why it is easier to balance a bike while it is in motion then have it stand still. Also the same principle is used in motorcycle racing. Take a look at a still photo of one of those racers and you'll see how far off the ground they are.

In physics terms, the normal force F(n) increase frictional force uF so the biker does not slip.

2006-06-23 08:20:57 · answer #3 · answered by easywintoo 3 · 0 0

During a turn a cyclist's cg (center of gravity) must lean in the direction of the turn so as not to fall. Gravity acting on the cg resists the centrifugal force of the turn. Try to lean the wrong way; but wear a helmet.

2006-06-23 08:23:31 · answer #4 · answered by Kes 7 · 0 0

while taking a turn two forces are acting on the cyclist.one is the centripetal force which acts inwards and another is centrifugal force which acts outwards. these 2 forces exactly balances each other and hence the cyclist does not fall.

2006-06-23 09:04:08 · answer #5 · answered by raman 1 · 0 0

Because they accept all the laws of condition of stablity

2006-06-23 09:38:41 · answer #6 · answered by Anirudha M 2 · 0 0

they know how to balance theirself on a turn

2006-06-23 08:05:21 · answer #7 · answered by nastaany1 7 · 0 0

centrifical force

2006-06-23 08:06:57 · answer #8 · answered by CALLIE 4 · 0 0

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