Physics - NLM Question with Solution | TestHub

Let the monkey climb with upward acceleration $a$. Rope tension: $T-10g=10a\Rightarrow T=(10+a)g$.

To lift the 15 kg mass off the ground: $T=15g=150\mathrm{N}$.

$(10+a)g=15g\Rightarrow a=5m/{\mathrm{s}}^2$, so the monkey must climb with acceleration greater than $5m/{\mathrm{s}}^2$.