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In the given figure the tension in the string OB is 30 N. find the weight W and the tension in the string OA. |
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Answer» Solution :Let `T_(1) and T_(2)` be the tnesions in the strings OA and OB respectively. According to lami.s theroem  `(T_(1))/(sin 90^(0))=(T_(2))/(sin 150^(@))=(W)/(sin120^(@)) (T_(2)=30 N)` or solving `w= 30 sqrt(3)N and T_(1)=60 N` |
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