Find the tension in the string \( A B \) loaded with weight \( \mat...

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Find the tension in the string \( A B \) loaded with weight
\( \mathrm{P} \) \( W \) at the middle, when \( A B \) is horizontal:

W
(1) zero
(2) \( W \)
(3) \( W / 2 \)
(4) infinity
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