Recent content by Donna

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    Does a CD's Outer Edge Spin Faster? Math Explained!

    My son has asked me a question I cannot answer. Can someone help? Does any given point on the outer edge of a CD (or any spinning object, like a record album), turn at a faster speed than a given point on the inside edge, because it is going a farther distance in the same amount of time...
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    Uncovering the Mystery of Spinning CDs: Why the Edge Isn't Moving Faster

    Please help me answer my son's question: It seems as though the outside edge of a spinning CD is moving faster than the middle of a CD. This can't be true, right? Why is it not true mathematically speaking? Thank you. Donna
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