CBSE Class 11-science Answered
A book is lying on a table. The weight of the book and normal force by the table on the book are equal in magnitude and opposite in direction. Is this an example of newtons third law?
Asked by varonika | 04 Aug, 2010, 12:00: AM
Expert Answer
No, this is not an example of Newton's third law. According to the Newton's law, if a body A exerts a force on body B, then B exerts a force on A equal in magnitude and opposite in direction. The forces act on DIFFERENT bodies. So, the normal by table on the book is action and the reaction pair is the force on table by the book. WEIGHT is due to the force of earth on the book, not due to the table. Hence this is not action reaction pair.
Regards,
Answered by | 04 Aug, 2010, 11:30: PM
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