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## Homework Statement

This is the question(16) I am going to talk about.

## Homework Equations

Acceleration=Force/Mass

## The Attempt at a Solution

I drew a Free Body Diagram for this question.Here,The red mark shows the point on the rope at which the monkey applies the force(10a).

So for the block to move up T<10a+10g and T>15g.

So,At the red mark

10(a+g)-T=10*a (Net Acceleration)...(i)

And for the block,

T-15g=15*a (Net Acceleration)....(ii)

So I have successfully find two equation.

What should I do next to get the final answer?

I will be thankful for help!