The Attempt at a Solution
Since sides length 3,4 and 5m are given and is in a right angle, I can solve for the angle between 5 and 3 (53.1 degrees) and between 5 and 4 (37 degrees). Then with the angle and a side (3 or 4), I solve for the x component, r, which is found to be 2.41m. Since the 4m rope is given to be 22N, I use trig and solve for the x component of force and found it to be 13.23 N.
I then use Fnet=mv^2/r
v= 4.9 m/s
edit: I got 5.8 m/s this time and I believe that could be correct. For the total Fx, I added the two x components of the tensions that I solved using trig.
I am not sure if this is right and need verification. Thanks!