A small conical tube is fixed horizontally at the bottom of a wide open tank. The wider end of the tube is fixed to the side wall and the cross-sectional area decreases from $A_1=2c{m}^2$ to $A_2=1c{m}^2$ from fixed end to discharge end. Neglecting viscosity of water, the horizontal component of the force exerted by water flowing out on the inner surface of the tube when the water level in the tank is 5m is $(g=10m/s^2)$