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21 December, 02:58

when a book falls from a shelf to the ground without anyone pushing on it, no work is done to the book. True or False

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  1. 21 December, 04:47
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    That's false.

    - - The force on the book is its weight.

    - - The force acts through the distance the book falls.

    - - The work done on the book is

    (weight) x (length of the fall)

    - - Gravity DOES the work.
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