A person walking on a tightrope holds a bar to help with their balance. Where does the person have an action-reaction force taking place in the picture below?
Newton’s third law of motion is often stated, “For every action force there is an equal and opposite reaction force.” All forces occur in pairs, and no force exists alone. You push on a door to open it, and the door pushes back with an equal force in the opposite direction. After all, you can feel the door, can’t you? As you walk, you push on the pavement with the sole of your shoe.The pavement pushes in the opposite direction, sending you forward.
It may seem more logical if you think of force pairs as an interaction between objects. An object always interacts with another object.Think about two ice skaters facing each other. If one skater pushes on the other’s hands, both skaters move backward. The first skater’s action force caused a reaction force from the other skater, even though the second skater did not try to push back.
In the image below,there is an action force and a reaction force. The key to figuring out the action-reaction force is knowing that the objects need to touch each other to exert an action-reaction force. The only exception to this rule is gravity. Forces exerted due to gravity can have contact with each other, but do not always have contact with each other.There are many action-reaction forces in the image below. What is the action-reaction force between the bat and the ball?
The action force is the force of the bat on the ball. The reaction force is the force of the ball on the bat. These forces are in opposite directions.
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A person walking on a tightrope holds a bar to help with their balance. Where does the person have an action-reaction force taking place in the picture below?
Between the rope and the balance bar
Between the person's arms and legs
Between the person's feet and the rope