A train has a constant velocity of 2 m/s east. What is the magnitude of the horizontal acceleration of the train?
1 answer:
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Let's see why g is 0 at centre of earth
Means g is indirectly proportional to height of object.
- If height is more gravity is less
- If height is less gravity is more
At centre h=0
- So if height is 0 then gravity is also zero.
And at centre the distance from top of earth surface is equal in opposite directions from centre.
So
- So gravity remains 0