Why does a car drive straight when the front wheels lock, but skid when the rear wheels lock?

Asker: Ward, 18 years old

Answer

Day Ward

A locked wheel has (almost) no grip. So when the rear wheels lock, the car at the back can move freely forward, backward, left or right. Forward is no problem, backward is unlikely, left and right are interesting for the rear because the car is braking and due to the law of conservation of energy, the rear prefers to keep its speed and overtake the front, this can be done on the left or right.

When the front wheels lock you get the same thing, the front can go in all directions. During braking, the effect is less spectacular because the direction in which the front end prefers to go is straight ahead, so the car just slides straight out of the corner.

Hopefully this is a sufficient answer to your question.
Kind regards

Why does a car drive straight when the front wheels lock, but skid when the rear wheels lock?

Answered by

Ing Bart Smeets

Electronics ICT Electricity

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