A non-uniform rod AB AB\,AB has length 4 m and mass 10 kg. It is held horizontally by vertical strings attached at A A\,A and BBB. The tension at A A\,A is three times the tension at BBB.
Find the tension at BBB. Use g=9.8g=9.8g=9.8 m s−2^{-2}−2.
Find the distance of the rod's centre of mass from AAA.