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Is the magnetic force that Earth exerts on a compass needle less than, equal to, or greater than the force that the compass needle exerts on Earth? Explain.

   Is the magnetic force that Earth exerts on a compass needle less than, equal to, or greater than the force that the compass needle exerts on Earth? Explain.

Physics Principle and Problems

Physics Principle and Problems

Paul W. Zitzewitz,… 1st Edition

Chapter 24, Problem 49

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Solved by Expert Averell Hause

06/01/2020

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This law applies to all forces, including magnetic forces. Show more…

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Is the magnetic force that Earth exerts on a compass needle less than, equal to, or greater than the force that the compass needle exerts on Earth? Explain.

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Key Concepts

Newton's Third Law

Newton's Third Law of Motion states that every action has an equal and opposite reaction. This principle implies that forces always come in pairs, where the force exerted by one object on another is met with a force of equal magnitude but opposite direction, regardless of the sizes of the objects involved.

Magnetic Force Interactions

Magnetic forces, like other forces, adhere to Newton's Third Law. When Earth exerts a magnetic force on a compass needle, the needle simultaneously exerts an equal and opposite force on Earth. This symmetry in force magnitude ensures that the action and reaction forces are balanced, emphasizing the fundamental nature of force interactions.

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