Newton’s third law
If we hold an object, we also feel its pull. Whilst the normal force exerted by our palm keeps the object balanced, the object also exerts a force on our palm which is equal in magnitude but opposite in direction to this normal force – that is why we feel the pull.
This is an example for the observation to every action there is always an equal and opposite reaction; in other words, the forces of two bodies on each other are always equal and are directed in opposite directions.
Newton’s third law
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If two objects interact, the force \(\mathbf{F_{12}}\) exerted by object 1 on object 2 is equal in magnitude and opposite in direction to the force \(\mathbf{F}_{21}\) exerted by object 2 on object 1: |
