申論題

6. The figure shows a cylinder that has an initial speed of 8.00 m/s at an initial height of h = 9.00 m. What is the normal force (N) acting on the cylinder when it reaches mid-height (level with the center) of the circular loop, which has a radius of 5.00 m? It rolls smoothly along the track. The cylinder's mass is 6.00 kg._____