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Nectac
Nectac
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The road does not change the direction of the force on the cornering wheel because the road is static. That means the wheel must apply the force to the road and the cornering/turning force is a reaction force. So we are left with the wheel changing direction which results in the changing road cornering force direction.

So what changes the direction of the wheel?

-If we say the cornering force changes the wheel direction then we have a wheel that no longer creates a cornering force because the cornering force and wheel rolling direction, at any instant, are always perpendicular.

-Similarly, if we say the wheel changes direction because the car is in circular motion - having direction changing angular momentum - then that ignores the fact that the wheel applies the force and the cornering force is a reaction force. The cornering force is what changes the velocity direction and not the wheel rolling direction.

-If we say the cornering force always exists because the wheel rolling direction and velocity direction (direction of motion) are not aligned then we are saying that the cornering force never changes the velocity direction.

The road does not change the direction of the force on the cornering wheel because the road is static. That means the wheel must apply the force to the road and the cornering/turning force is a reaction force. So we are left with the wheel changing direction which results in the changing road cornering force direction.

So what changes the direction of the wheel?

-If we say the cornering force changes the wheel direction then we have a wheel that no longer creates a cornering force because the cornering force and wheel rolling direction, at any instant, are always perpendicular.

-Similarly, if we say the wheel changes direction because the car is in circular motion - having direction changing angular momentum - then that ignores the fact that the wheel applies the force and the cornering force is a reaction force. The cornering force is what changes the velocity direction and not the wheel rolling direction.

The road does not change the direction of the force on the cornering wheel because the road is static. That means the wheel must apply the force to the road and the cornering/turning force is a reaction force. So we are left with the wheel changing direction which results in the changing road cornering force direction.

So what changes the direction of the wheel?

-If we say the cornering force changes the wheel direction then we have a wheel that no longer creates a cornering force because the cornering force and wheel rolling direction, at any instant, are always perpendicular.

-Similarly, if we say the wheel changes direction because the car is in circular motion - having direction changing angular momentum - then that ignores the fact that the wheel applies the force and the cornering force is a reaction force. The cornering force is what changes the velocity direction and not the wheel rolling direction.

-If we say the cornering force always exists because the wheel rolling direction and velocity direction (direction of motion) are not aligned then we are saying that the cornering force never changes the velocity direction.

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Nectac
Nectac
  • 71
  • 1
  • 6

When a car turns, how does the cornering force from the road change direction?

The road does not change the direction of the force on the cornering wheel because the road is static. That means the wheel must apply the force to the road and the cornering/turning force is a reaction force. So we are left with the wheel changing direction which results in the changing road cornering force direction.

So what changes the direction of the wheel?

-If we say the cornering force changes the wheel direction then we have a wheel that no longer creates a cornering force because the cornering force and wheel rolling direction, at any instant, are always perpendicular.

-Similarly, if we say the wheel changes direction because the car is in circular motion - having direction changing angular momentum - then that ignores the fact that the wheel applies the force and the cornering force is a reaction force. The cornering force is what changes the velocity direction and not the wheel rolling direction.