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A train A runs from east to west and another train B of the same mass runs from west to east at the same speed along the equator.

Monjur Alahi

A train A runs from east to west and another train B of the same mass runs from west to east at the same speed along the equator. A presses the track with a force F1 and B presses the track with a force F2 .
(a) F 1> F2 (b) F 1 < F2(c) F1= F2 (d) the information is insufficient to find the relation between F1 and F2 .


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Salim Ahmed Kawsar

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The correct answer is (a) F1 > F2. 

Explanation:

The earth spins from west to east at equator. To maintain the same speed the first train has to press the track more than normal as it goes against the speed of earth's surface while the second train gets help from the earth's movement and it has to press the track less than the normal which explains the answer.

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