Question

Why the tyres are circular in shape?

(a) they require less material

(b) rolling friction is smaller than sliding friction

(c) it is easy to inflate circulartyres

(d) none​

Answer 1

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Answer 2

Question:-

Why the tyres are circular in shape?

Options:-

(a) they require less material

(b) rolling friction is smaller than sliding friction

(c) it is easy to inflate circular tyres

(d) none​

Answer:-

For the above question the answer is

(b) rolling friction is smaller than sliding friction.

Because,

• The tyres 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.
• Had the wheels been of any other kind of shape, then sliding friction would have come into play and that would have caused more friction and more resistance in the movement of cars and automobiles.