Time management is very much important in IIT JAM. The eduncle test series for IIT JAM Mathematical Statistics helped me a lot in this portion. I am very thankful to the test series I bought from eduncle.
Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Ghost.
Remember in case of rope hanging, tension in rope varies linearly from lower end to upper end. and Tension at point is define by how much weight is hanging below that point. rest is just calulation and in our case velocity is V=(g*x)^(1/2). you can easily derive it by putting T= g*ū*x in formula V=(T/ū)^(1/2). Regards.
thank u