Can we calculate the m of energy loss from the sun due to emission of electro magnetic wave.?

Ok, first off, the centrifugal 'force' is a fictitious force felt by observers in non-inertial reference frames as they travel in a circular motion (it's the tendency to move to the outside of the circle in which you are rotating), and the centripetal 'force' is the acceleration that a person or thing that is traveling in a circle experiences and actually keeps them in their circular motion (it acts radially inward while your velocity lies tangential to your circular path). Anyway, yes the sun is shedding m all the time in the form of neutrinos and the solar wind, and sometimes it blows of big chunks of it self (I use the term 'big' loosely). But although the sun may seem to be losing a lot of m, it's not much at all considering how much m the sun actually has. So no, this m loss does not affect the Earths orbit.