Conceptual Physics (12th Edition)

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

Chapter 9 - Think and Explain: 56


These are an action-reaction pair, and Newton's third law tells us these forces have the same magnitude. $$ G \frac{M m}{d^{2}} = G \frac{m M}{d^{2}} $$
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