In the ride shown, child A sits in a seat attached by a cable of length Z to a freely moving trolley B of mass mg. The total mass of the child and seat is mA. The trolley is constrained by the beam to move only in the horizontal direction. The system is released from rest at the angle 000. and it is allowed to swing in the vertical plane. Neglect the mass of the cable and treat the child and seat as a single particle. Hint: Observe that there is no external force on the system in the horizontal direction. Energy conservation (a scalar principle) can be used in conjunction with momentum conservation (a vector principle) to address the questions that follow. Problem 15.58 Determine expressions for the velocities of the trolley and the rider the first time that 0=0°. Evaluate your solution for WA = 100 lb. WB 20 lb. L= 15 ft. and 0 = 70°. Answer VA2 = (-10.29 ft/s)f, Va2 = (51.46 ft/s)

In the ride shown, child A sits in a seat attached by a cable of length Z to a freely moving trolley B of mass mg. The total mass of the child and seat is mA. The trolley is constrained by the beam to move only in the horizontal direction. The system is released from rest at the angle 000. and it is allowed to swing in the vertical plane. Neglect the mass of the cable and treat the child and seat as a single particle. Hint: Observe that there is no external force on the system in the horizontal direction. Energy conservation (a scalar principle) can be used in conjunction with momentum conservation (a vector principle) to address the questions that follow. Problem 15.58 Determine expressions for the velocities of the trolley and the rider the first time that 0=0°. Evaluate your solution for WA = 100 lb. WB 20 lb. L= 15 ft. and 0 = 70°. Answer VA2 = (-10.29 ft/s)f, Va2 = (51.46 ft/s)