Q23. The density and breaking stress of a wire are $6 \times 10 ^ { 4 } \mathrm {~kg} / \mathrm { m } ^ { 3 }$ and $1.2 \times 10 ^ { 8 } \mathrm {~N} / \mathrm { m } ^ { 2 }$ respectively. The wire is suspended from a rigid support on a planet where acceleration due to gravity is $\frac { 1 } { 3 } ^ { \text {rd } }$ of the value on the surface of earth. The maximum length of the wire with breaking is $\_\_\_\_$ m (take, $\mathrm { g } = 10 \mathrm {~m} / \mathrm { s } ^ { 2 }$ ).