In the given figure the tension in the string OB is 30N. Find the weight 'W and the tension in the string OA.

In the given figure the tension in the string OB is 30N. Find the weig

1.	In the given figure the tension in the string OB is 30N. Find the weight 'W and the tension in the string OA.
Answer» SOLUTION :Let `T_(1)` and `T_(2)` be the tensions in the strings OA and OB respectively ACCORDING to lami.s theorem `(T_(1))/(sin 90^(@)) = (T_(2))/(sin 150^(@)) = (W)/(sin 120^(@)) (T_(2) = 30N)` on solving `w = 30sqrt(3)N` and `T_(1) = 60 N`