science
A book is on top of a table. Earth's gravity exerts a constant force of 15N on the book. Why does the book not move as a result of this force?
asked by
Josie

The table exerts an equal upward force or 15 N on the book. The net force is zero.
posted by drwls

the force of gravity is balanced by the force of friction
posted by Emiliy
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