1N weight on earth is 98 gram, right? The mass of the apple is 0.0982 Kg. (Oh, BTW, that is a very small apple, usually there only are 4 to 5 apples in a kg - an apple's weight is around 2 Newton).
Use Newton's laws to calculate the distance to the center where the speed of something falling to it will reach the speed of light. High order mathematics are required. Come back if you don't understand.
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That is what makes me mad. No theoretician has any idea of what is happening around him. They even have no idea of the weight of an apple.
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And this poor boy who asks this question, is only searching for the answer for his homework. He doesn't even want to understand the solution. But of course, this solution, if given to him, will not get him graduated.
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