A train 1 moves from east to west and another train 2 moves from west to east on the equator with equal speeds relative to ground. The ratio of their centripetal accelerations a1a2relative to centre of earth is:

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≥1

answer is C.

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Detailed Solution

The earth rotates west to east. So the velocity of train 2 increases. ac=v2/R. Hence centripetal acceleration of train 2 is more.

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