Tarzan (whose mass is 90.0 kg) plans to swing down, starting from rest, from a ledge using a light vine 7.4 m long. He holds one end of the vine, and the other end is tied higher up on a tree,with the vine being 10 degrees from vertical. At the lowest point of his swing, he plans to let go and drop a short distance to the ground. If Tarzan missed the first chance to let go and drop to the ground, how long after first beginning his swing will Tarzan reach his lowest point for the second time?
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