The proportioning valve adjusts the amount of fluid pressure between the front brakes and rear brakes, I would say the answer is yes.
Your '77 doesn't have a proportioning valve unless it was installed by a previous owner. It didn't come from the factory with one. The thing many people mistakenly call a proportioning valve is actually something else altogether. It's actually a PRESSURE DIFFERENTIAL SWITCH. It just detects the pressures in the front and rear brake systems and, if one is leaky or has lower pressure than the other, it will trip and illuminate the BRAKE light. To "reset" it, all you have to do is troubleshoot your brake system to find out whether it's the fronts or the rears that have low pressure. I'd start by inspecting all of them for leaks. That's the most common thing. Fix that and the PRESSURE DIFFERENTIAL SWITCH will reset itself the first time you use the brakes after a successful repair. Good luck.
Means the brake on one side brakes stronger than the brake on the other side. When you brake this will try to force the car into a turn, making it difficult to control - not a good thing.
It is called a regulator. To be specific, the part of the regulator that goes in your mouth is called the second stage of the regulator.
The brake booster is what gives you power brakes. In the engine compartment in front of the steering wheel is a round black flat ball looking thing. That's the brake booster with the brake master cylinder attached in front of it. The brake booster uses VACCUM from the engine to multiply the force that your foot applies to the master cylinder. Used with power brake applications
there is no such thing as the force.
YES
Yes, there is no such thing as clutch fluid. It's all brake fluid.
What regulator are you refurring to, the fuel pressure regulator... its located on top of the throttle body, its the round thing that's held in place with 3 star screws.
Check the LPV (Load proportioning valve), if fitted. It controls the amount of rear vs front braking under "heavy" loads, if faulty it will cause rear lock up. Another thing to check is that front brakes have been bled, and the front brake circuit is working at all.
NO! Brake Calipers are what compress your Brake Pads on to the rotor which turn simeultaniously with your wheels.
Reactive centrifugal force is not the same thing as centrifugal force. Reactive centrifugal force is the reaction force. It is the reaction force reacting to a centripetal force.
No. There is no such thing as "conservation of force".