1. The problem statement, all variables and given/known data https://moodle.telt.unsw.edu.au/pluginfile.php/2296810/question/questiontext/2691158/6/1668509/cart%20track.png A block of ice (that we shall treat as a particle) slides with negligible friction or air resistance on the curved tpath sketched (black line). The mass of the block is m = 44 kg. Its initial speed is v0 = 1.3 m.s–1. The height h= 4.1 m. At the bottom, the path has a radius of curvature (fine circle) R = 3.4 m. At the bottom of the path, what is the force exerted on the ice by the path? 2. Relevant equations K + V = constant 3. The attempt at a solution Energy before it slides = after it slides: mgh + 1/2 * m*v0^2 = 1/2 * m*v_final^2 (at the bottom h = 0 -> mgh=0) 44*9.8*4.1 + 1/2*44*1.3^2 = 1/2*44*v_final^2 -> v_final=9.06m/s Circular motion: Fc=ma=m*v_f^2/R=44*9.06^2/3.4=1062N upwards W=mg=44*9.8=431.2N downwards F_path=1062-431.2=630.8N upwards Could someone suggest where I did wrong? Thanks!