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In a wheel and axle, if the wheel is triangular or rectangular in shape, would it turn
around easily?
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In a wheel and axle, if the wheel is triangular or rectangular in shape,it would be not easy to turn around as compared with a circular wheel.
- A smooth roll of a wheel is only possible when the wheel has a smooth external curvature.
- And a smooth curve is only possible by infinite number of sides.
So,less the number of sides means greater resistance while rolling.
- This criteria of being a smooth curve with evenly distributed curvature in all directions is only possible for the circular shape.
- That's why circle is always preferable for a wheel shape than triangles or rectangles.
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