A massless thread passes through a ring (smooth). The ring is in a circular path with both part ...

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A massless thread passes through a ring (smooth). The ring is in a circular path with both part of the thread in tension. Which of the following values of \( \theta \) and \( \alpha \) are possible?
(1) \( \theta\alpha \)
(2) \( \alpha\theta \)
(3) \( \theta=\alpha \)
(4) Anything is possible
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