A ball swinging at the end of a massless string, as shown in the figure, undergoes simple harmonic motion. At what point (or points) is the magnitude of the instantaneous acceleration of the ball the greatest? 
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A form of intellectual property law that grants authors and creators exclusive rights to their original works.
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A programming paradigm based on the concept of "objects", which can contain data and code to manipulate that data.
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A system for annotating a document in a way that is syntactically distinguishable from the text, used to structure and display text and multimedia documents.
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