i know its a unit for force... i'm intrigued by the relation 1kgwt=9.8N? by dimensional analysis L.H.s [M^{2}L^{1}T^{-2} {since wt=kgm/s^{2}} R.H.S [M^{1}L^{1}T^{-2} i understand i'm wrong somewhere, but i'm not able to figure it out, so pls help me :) Also how to get the relation between both.( think 9.8 is the contribution of 'g')
You interpreted kg wt as mass*weight. A kilogram weight is a unit of force. Specifically, it is the force needed to make a mass of 1 kg accelerate by 9.80665 m/s^{2}.
You can't derive it. The kilogram-force (sometimes called the kilogram-wt) is defined as the force needed to make a one kilogram of mass accelerate by 9.80665 m/s^{2}.
1 kgwt means the "weight of a mass of 1 kg on earth". So: W = ma = (1 kg)(9.81 m/s²) = 9.81 N = 1 kgwt kgwt is an arbitrary defined unit for force, just like 1 lb = 4.448 N