21Rem : Work is Path independent ...... in mechanics [3] not thermo huh .....
W = F.S
theree is no displacement in Y-dirctn
equation of semi-circle frm the diagraam is (x-2)2+y2 = 4
=> y2 = 4 - (x-2)2 ------------------> @
integrating F∂S over 0 to 4 in the x - dirctn ........
Substitute y2 from @ in the given expression of force
u'll get ur ans [1]