[" For the system shown in the figure,the cylinder "],[" on the left at Lhas a mass of "600kg" and a cross "],[" sectional area of "800cm^(2)" .The piston on the right,"],[" at "S" ,has cross sectional area "25cm^(2)" and "],[" negigible weight.If the apparatus is filled with oil."(rho],[=0.75gm/cm^(3)" ) Find the force "F" required to hold "],[" the system in equilibrium."]