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Find the tension in the horizontal strin...

Find the tension in the horizontal string PQ and the string QR in the given figure. [Take `g=10m//s^(2)`]

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From figure, we get
` T_(1) sin 30^(@) = 70 N`
and ` T_(2) = T_(1) cos 30^(@)`
` :. T_(1) = 140 N`
and ` T_(2) = 140 xx sqrt(3)/2 = 70 sqrt(3) N`
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