The small 5-oz slider A moves without appreciable friction in the hollow tube, which rotates in a horizontal plane with a constant angular speed of ω=7 rad/sec. The slider is launched with an initial speed of dr=60 ft/sec relative to the tube at the inertial coordinates x=6 in. and y=0. Determine the agnitude P of the horizontal force exerted on the slider by the tube just before the slider exits the tube.