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प्रश्न
A book is resting on a table. Which of the following is the correct reaction force to the gravitational pull of the Earth on the book?
विकल्प
Book’s gravity on Earth
Book pushes down on table
Table pushes up on book
Air pushes down on book
MCQ
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उत्तर
Book’s gravity on Earth
Explanation:
The action is the Earth pulling the book; the reaction must be the book pulling the Earth. Both are gravitational forces.
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