Answers

2016-06-23T17:19:27+08:00
IF you mean to stack up 6 coins into a vertical tower & then striking the bottom-most coin, with a 7th coin THEN here's your answer::: assuming friction to be ABSENT - the 7th coin will replace the 6th coin & take its place at the base of the tower assuming friction to be PRESENT - either same as above or the tower falls
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