Fundamentals of Physics Extended (10th Edition)

Published by Wiley
ISBN 10: 1-11823-072-8
ISBN 13: 978-1-11823-072-5

Chapter 5 - Force and Motion-I - Questions: 11a

Answer

The magnitude of the normal force increases when force F is directed downwards.

Work Step by Step

The normal force is the force from the table to the block, that is opposite the force of gravity. This force is equal and opposite to the force of gravity (in this situation), so increasing the force of gravity effectively increases the normal force. Applying force in the same direction as gravity (downwards) will act like the force of gravity is increasing, and the normal force will increase.
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