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balanced forces 8 grade physics English


In physics, "balanced forces" refer to a state where multiple forces acting on an object are equal in magnitude and opposite in direction, resulting in no change in the motion of the object. 

Here's a breakdown:

1. Net Force. This is the sum of all the forces acting on an object. If this net force is zero, we say that the forces are balanced.

2. No Acceleration. When forces are balanced on an object, the object will not accelerate. This means it won't speed up, slow down, or change direction. It will either remain at rest or continue moving at a constant velocity.

3. Examples
   - A book resting on a table experiences two primary forces: the gravitational force (or weight) pulling it downward and the normal (or support) force from the table pushing it upward. These forces are equal and opposite, so they are balanced, and the book remains at rest.
   - In a game of tug-of-war, if both teams are pulling with the same strength, the rope remains stationary. The forces from each side are balanced.

It's essential to note that "balanced" does not mean "no forces." Instead, it means the forces present effectively cancel each other out, resulting in no net force on the object.