A thin-walled pipe, of diameter 4 in., is held stationary in a river flowing at 6 ft/s parallel to its axis. The pipe contains a sharp-edged orifice, of diameter 3 in., with a contraction coefficient of 0.60 based on the area. Neglecting entry losses and shear forces on the pipe, and assuming that the orifice is distant from either end of the pipe, calculate the flow rate through the pipe and the force required to hold it n the stream.