Tension in steel cable with two masses and time-varying force

[blinder]

"If two masses are attached by a steel cable and each
mass has a force pulling on it, write an expression
for the Tension is the cable as a function of the two
masses and the two forces. Assume one of the forces is
constant, but the other force changes.

 

[marlon]

"If two masses are attached by a steel cable and each
mass has a force pulling on it, write an expression
for the Tension is the cable as a function of the two
masses and the two forces. Assume one of the forces is
constant, but the other force changes.

What have you done up till now to tackle this problem ?

marlon