Physics
Why does a coin placed on a card, drop into the tumbler when the card is rapidly flicked with the finger?
Laws of Motion
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Answer
A coin placed on a card, drop into the tumbler when the card is rapidly flicked with the finger, because when the card is flicked the momentary forces acts on the card, so it moves away. But the coin kept on it does not share the motion at once and it remain at it's place due to inertia of rest. The coin then falls down into the tumbler due to the pull of gravity.
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