A particle of mass m is in a uni-directional potential field where the potential energy of a particle depends on the x-coordinate given by `phi_(x)=phi_(0) (1- cos ax)` & `'phi_(0)'` and 'a' are constants. Find the physical dimensions of 'a' & `phi_(0)`.

Answer

`L^(-1),ML^(2)T^(-2)`

Explanation

`U_(x)=k(1-cos ax)`
`[ax] "is Dimension less",[a]=L^(-1)`
`[U_(x)]=[k]rArr[k]=ML^(2)T^(-2)`