What is a balanced and unbalanced force?

Explanation

### Step-by-Step Solution:

1. **Definition of Balanced Forces**:
- Balanced forces are two or more forces acting on an object that are equal in size and opposite in direction.
- When these forces act on an object, they cancel each other out, resulting in a net force of zero (F_net = 0).
- Example: If a block has a force of 20N acting to the right and another force of 20N acting to the left, the forces are balanced because they are equal and opposite.

2. **Characteristics of Balanced Forces**:
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