A book rests on the table. its mass is 3 kg. what is its normal reaction
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As we know,due to gravity
the Book on the table exerts a downward force to the table,but because of the table do exert an upward force against the book. According to Newton's Third Law of Motion,an equal and opposite reaction (caused by an action), is working here,which allows the book to stay in rest,and as we know,naturally it's the pressure formed by gravity and atmospheric pressure.
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