[image] In fig. 2; above, \(M N\) is a light uniform metre rule plvoted at 0 , the \(80 \mathrm{~cm}\) mark. A load of mass \(3.0 \mathrm{~kg}\) is suspended on the, rule at \(L_{1}\) the \(1.0 \mathrm{~cm}\) mark. If the rule is kept in equilibrium by a string \(p\), fixed at \(p\) and attached to the rule at \(\mathrm{R}\), the \(20 \mathrm{~cm}\) mark, then the tension \(T\) In the string is ____________
A. \(25 \mathrm{~N}\) B. \(50 \mathrm{~N}\) C. \(250 \mathrm{~N}\) D. \(5000 \mathrm{~N}\) E. \(25000 \mathrm{~N}\)
