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Joe is holding a book over his head. Is he preforming work? why?

Joe is holding a book over his head. Is he preforming work? why?
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Joe is holding a book over his head. Is he preforming work? why?

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User Moog
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If a book is there on the table, no work is done as no distance is covered. If I hold up a book in my hand and my arm is stretched, if no work is being done, where is my energy going?
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User Jsight
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