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Science 2 Balls Riddle |

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We have two identical balls in terms of diameter and weight. However, one of them is solid and the other is hollow.

Without knocking the ball, can you find the solid ball?

1 Answer

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Just release the ball at the top of an incline and the one that reaches bottom will be the solid ball. The solid ball has a smaller moment of inertia and hence less mechanical energy is spent on rotating the ball and therefore it will reach earlier.

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