Physics - NLM Question with Solution | TestHub

If the fireman slides down with some acceleration, his apparent weight decreases. For critical condition, rope can bear only$\frac{2}{3}$of his weight. If$a$is the minimum acceleration then,

Tension in the rope = Breaking stress$=m\left(g-a\right)$

$m\left(g-a\right)=\frac{2}{3}mg \mathrm{ }\mathrm{ }\Rightarrow a=g-\frac{2g}{3}=\frac{g}{3}$