Question

why the tyres are circular in shape​

Answer 1

Answer:

Tyres move by rolling. And the circular shape is the most appropriate one for this purpose as it maintains a uniform and smooth contact with the surface. Any shape other than round- think square, rectangular, hexagonal etc- has edges or points that dig into the road. This makes movement slower.

Explanation:

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Answer 2

The wheels of cars or automobiles are made circular for the purpose of reducing the frictional force.

The rolling friction is lesser than sliding friction, therefore, wheels are made circular in shape.

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