A trough is filled with liquid of weight density 40 N/m and with cross section in the shape of a semiellipse 6 meters wide on top and 5 meters high. al Find the force acting on one end due to liquid pressure. (Note: Place the top of the semiellipse along the x-axis.) b] Set up the integral for the force against one end if thetrough is filled with the liquid to a depth of 4 m