Is Strain Dimensionless According to Dimensional Analysis?

[wakejosh]

The quantity "strain" expressed in terms of the fundamental quantities (mass, length, time) is equivalent to?


isn't this dimensionless?

 

[physics girl phd]

Yes it is unitless! Strain doesn't have units -- it's the change in length per unit length.

 

[QuantumCrash]

Absolutely. Use dimensional analysis if you have problems.