A 1000-kg roller coaster in an amusement park left the 65-m high launching platform to reach ground by sliding along an incline. Then the roller coaster went up a circular loop of 25-m in diameter. The loop structure registered a support force of (30 38, 400 " go) N when the car was at the top of the loop. Find the velocity just before entering the smooth loop structure. Find the heat generated along the incline at 419 degrees & coefficient of kinetic friction of 0.15. Find the initial velocity when the roller coaster was launched. The roller coaster left the loop structure to reach ground the second time to complete the ride. The horizontal landing platform had a kinetic coefficient of friction of 0.9. Find the length of the landing platform for the roller coaster to reach 0 m/s using the Work-energy theorem