Identify the physical quantity x defined as `x = (I F upsilon^2)/(W I^3),` where I is moment of inertia, F is force, `upsilon` is veloicty, W is work and I is length.

Explanation

As `I = [ML^2], F = [MLT^(-2)], upsilon = [LT^(-1)]`
and `W =[ML^2T^(-2)]`
`:. X =(I F upsilon^2)/(W I^3) = ([ML^2][MLT^(-2)][LT^(-1)]^2)/([ML^2 T^(-2)][L^3])`
`=[ML^0T^(-2)]`
These are the dimensions of surface tension ,
force constant, energy//area.