Question

Give two drawbacks of dimensional analysis​

Answer 1

Dimension-ally correct equation is sometimes incorrect because it doesn’t take into account dimensionless constants like numbers.

For e.g : v² +2as and v²+5as have same dimensions but they are physically incorrect.

It does not test whether a physical quantity is a scalar or a vector.

It cannot derive relation or formula if a physical quantity depends upon more than three factors having dimensions.

It cannot derive a formula containing trigonometric function, exponential function, and logarithmic function.

It cannot derive a relation having more than one part in an equation.

Answer 2

Answer:

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