In the Skycoaster amusement park ride, riders are suspended from a tower by a long cable. A second cable then lifts them until they reach the starting position indicated in Figure P5.3. The lifting cable is then released, and the riders swing down the circular arc shown. If the four riders have a total mass of 270 kg, what are the tensions in the two cables just before release?

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FIGURE P5.3 15 26