Question

When you first hold up the book, is one force bigger than the other? Say why or why not.


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Answer 1

Answer:

For example, if a book is resting upon a surface, then the surface is exerting an upward force upon the book in order to support the weight of the book. On occasions, a normal force is exerted horizontally between two objects that are in contact with each other.

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Explanation:

Question

When you first hold up the book, is one force bigger than the other

Answer 2

Answer:

Electrostatic repulsion between the electron clouds of the atoms in the surface of the book and those in the surface of your hand. These are being squeezed together by the gravitational attraction between the book and the earth. The book sinks into your hand until the normal force balances its weight.

Explanation: