Is dimensional analysis applicable to only SI ?

Explanation

**Step-by-Step Solution:**

1. **Understanding Dimensional Analysis**: Dimensional analysis is a method used in physics to analyze the dimensions of physical quantities. It is based on the principle that physical quantities can only be added or equated if they have the same dimensions.

2. **Fundamental Quantities**: Fundamental quantities are the basic physical quantities that cannot be defined in terms of other quantities. Examples include mass (M), length (L), and time (T). Each physical quantity can be expressed in terms of these fundamental dimensions.

3. **Equating Physical Quantities**: When we say that physical quantities can be added or equated, we mean that they must share the same dimensional representation. For example, you can add lengths (meters) to lengths (centimeters) because they both have the dimension of length [L].

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