Why do action reaction forces never cancel each other?

Answer 1

Because they are acting on different objects.
The action and reaction forces - in the sense of Newton's Third Law - act on different objects. In some everyday situations, such as a book lying on a table, pressing down on the table, and the table pressing up on the book, these forces are balanced by additional forces, in other cases, they are not.
Please note that "action" and "reaction" forces (from Newton's Third Law) act on different objects. Only forces acting on the same object may cancel out (for purposes of Newton's Second Law), if their vector sum happens to be zero.

Answer 2

Action and Reaction forces are not balanced forces because they act on two objects. Examples:::::::

1. When you lift up your book bag, your book bag pulls down on you.

2. When you walk you push back on the ground, and the ground pushes up on you.

GRAVITY AND THE 3RD NEWTON'S LAW

According to the third law, you aren't just pulled to the Earth- Earth is also pulled toward you. Because Earth has such a large mass, the force you exert on it doesn't have a noticeable effect.

ASHAPREKH44

Answer 3

When an action brings about an equal and opposite reaction, there are a number of possible consequences. A frequent consequence would be to cause two objects to move in opposite directions. The action of rocket exhaust leaving a rocket nozzle causes the rocket to move in the opposite direction. Rather than cancelling each other, the action and reaction make each other possible.

Answer 4

They always do! If the action of your weight on the seat of your chair were not exactly

cancelled by the reaction of the force of the chair against your body, then your bottom

would be accelerating vertically, either up or down, depending on which of the two was

the greater force.

Wherever you see one thing pushing on something else but not moving it, you know

that the forces where they meet are exactly matched, otherwise something would be

accelerating.

Don't forget that little phrase in Newton's law where it says that for every action,

there is an equal and opposite reaction. If they're really equal and opposite, then

they definitely do cancel each other out. And I think you'll agree that old Ike generally

knew what he was talking about.

Answer 5

Please note that "action" and "reaction" forces (from Newton's Third Law) act on different objects. Only forces acting on the same object may cancel out (for purposes of Newton's Second Law), if their vector sum happens to be zero.

Answer 6

Action-reaction forces always act on different objects. According to Newton's third law of motion, when one object exerts a force on a second object, the second object simultaneously exerts an equal and opposite force on the first object. These forces cannot cancel each other out because they act on different objects.

Answer 7

Excuse me. They always DO .