Răspuns:
[tex]mg = \frac{ \sqrt{14} }{6} [/tex]
Explicație pas cu pas:
[tex]a = \frac{7}{12} [/tex]
[tex]b = 2 \times \frac{1}{3} \\ = \frac{2}{1} \times \frac{1}{3} \\ = \frac{2}{3} [/tex]
[tex]mg = \sqrt{a \times b} \\ = \sqrt{ \frac{7}{12} \times \frac{2}{3} } \\ = \sqrt{ \frac{7}{6} \times \frac{1}{3} } \\ = \sqrt{ \frac{7}{18} } \\ = \frac{ \sqrt{7} }{ \sqrt{18} } \\ = \frac{ \sqrt{7} }{3 \sqrt{2} } \\ = \frac{ \sqrt{14} }{6} [/tex]
