Conceptual Physics (12th Edition)

Published by Addison-Wesley
ISBN 10: 0321909100
ISBN 13: 978-0-32190-910-7

Chapter 5 - Think and Explain: 37

Answer

a. Two force pairs act on the apple: Earth’s downward pull on the apple (action 1), and the hand's upward support force on the apple (action 2). The corresponding reaction forces are: the apple’s upward pull on the Earth (reaction 1), and the apple pushing the hand downward (reaction 2). b. With no air resistance, one force acts on the apple: Earth’s downward pull on the apple (action 1). The corresponding reaction force is the apple’s upward pull on the Earth (reaction 1).
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