Question:
Suppose the entire system of the previous question is kept inside an elevator which is coming down with an acceleration $\mathrm{a}<$ g.Repeat parts (a) and (b).
Solution:
In elevator, moving down with acceleration a, effective acceleration will be
$g_{\text {eff }}=g-a$
So, replace $g$ by $g_{\text {eff }}$ in above answers.