Rahul pushes a book of mass 2 kg on the table from point A to point B, which are 1 m away from each other. What is the work done by the gravitational force on the book?
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The work done by gravitational force, W= gravitational force × displacement =m(−g)h ( g is negative sign because the book is lifted against gravitational force)
or W=2(−10)1.5=−30J
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