Oh yea,
This circuit doesn't work, or exactly, the opamp output (pin 6) always ties to +Vcc. It is not because the resistor as you said.
1. You use the opamp in comparator mode, due to no feedback resistor.
2. You use the split power supply (of course, for 741), and it should not be exceed +/-12V, I guess you use any within +/-9V to +/-12V.
But regardless the supply voltage, you can easily realize, the voltage at (-) input (pin 2) is always less than the the voltage at (+) input (pin 3).
For example, suppose you use +/-12V,
so (-) input voltage is (12V-5V=+7V),
(+) input voltage: minimum = (12V/(6.8+1+3.3))*6.8 = 7.35V
maximum = (12V/(6,8+3.3))*6.8 = 8.08V
and the opamp will not change output status when you adjust the potentiometer.
To use the circuit in this comparator mode, you should re-calculate the resistor divider network so that the (-) input voltage is within the (+) input voltage range (minimum to maximum).
nguyennam