- #1

I attempted this problem, solving a system of 4 equations:

pulley: 1(9.8)-(T1-T2)= a

5Kg mass: 5(9.8)-T1=-5a

1Kg mass: 1(9.8)-T2=-(f-a)

2Kg mass: 2(9.8)-T2=(f+a) where a=acceleration of 5 Kg mass

F=acceleration of the 1 and 2 Kg masses relative to the second pulley

T1= tension in the first string

T2 Tension in the second string

Where is my mistake?