Q.

If ‘O’ is at equilibrium then the values of the tension  T1 and  T2  are, (20 N is acting vertically downwards at O).

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a

20N, 30 N

b

20 3N, 20N

c

203N, 203N

d

10N, 30N

answer is B.

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Detailed Solution

T11sin30°=T2cos30°;T1=3T2…(1)T1cos30°=20+T2…(2); solving (1) and (2)
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