How can I visualize five force-sensors at the same time?

Other Hardware Sensors
13

The Serial Plotter may also be an option. It's only arrived recently in the Arduino IDE and doesn't seem to have any documentation yet.

Output your values with commas separating them. The serial plotter will draw them as different-coloured lines.

Serial.print(force);
Serial.print(",");
Serial.print(force1);
Serial.print(",");
Serial.print(force2);
Serial.println();