How to Solve a Friction and Tension Problem in Physics

[tmt1993]

Homework Statement

The problem enclosed was given as a one problem quiz by my physics teacher. Out of both Honors classes, nobody got it, so he sent it home. I still have little to no idea on how to solve it.
View attachment phys prob 2.pdf

Homework Equations

net force=mass*acceleration
ac=(V^2)/d

The Attempt at a Solution

I drew the free body diagrams and tried to do some algebraic maneuvering but none of it got me anywhere. HELP...please

 

[tmt1993]

he said we could use any resources that we found

 

[shootingrubbe]

The attachment is unaccessible by me... It says pending approval.