Assume these poor souls are supported by a 1000 lb steel rod about 25feet long. Assuming 24 riders (I counted feet) at 100lb each and a 200lb steel carrage. Make appropriate estimates of dimnesions from the photo as necessary. The arm was swinging upwards and has stopped at an elevation of 60 degrees with respect to the horizontal before descending. At this instant, determine the reaction forces at the base of the arm and the acceleration of the riders.