The small cart of mass m is nudged with negligible velocity from its horizontal position at A onto the parabolic path, which lies in a vertical plane. Neglect friction and show that the cart maintains contact with the path for all values of k. Then calculate the normal force N under the cart if m = 3.6 kg, k = 2.7 m, and x = 1.7 m. -y=kx Answer: N = i N