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A ball is attached to a horizontal cord ...

A ball is attached to a horizontal cord of length `l` whose other end is fixed. (a) If the ball is released, what will be its speed at the lowest point of its path? (b) A peg is located a distance `h` directly below the point of attachment of the cord. If `h=0.75l`, what will be the speed of the ball when it reaches the top of its circular path about the peg?

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The correct Answer is:
`[sqrt(2gL),sqrt(gL)]`
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