Why does a cyclist bend or lean during a turn?

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What are the scientific reasons for spin or curve on a soccer ball? What forces are affecting this?

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Why is it said that increasing heights of building affect the revolution time of earth?

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Why does a stationary body above the surface of the earth not change its position after some time while the earth is moving? Suppose if we place an object above the surface of the earth, would it be at the same position after some time and why?
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Is it true that pressure exerted by a human foot is more than than exerted by that of an elephant?
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