A bead slides without friction around a loopthe-loop. The bead is released from a height 9.1 m from the bottom of the loop-the-loop which has a radius 3 m. The acceleration of gravity is 9.8 m/s 2 . The speed at point A is 7.794870108 m/s. How large is the normal force on it at point A if its mass is 3 g? Answer in units of N.