Prove that the hydraulic press is a force multiplier
Answers
Answer:
When a fluid is under pressure, that pressure acts equally in all directions. So take a small hydraulic cylinder and connect it via a pipe to a large hydraulic cylinder. Let's say that the large cylinder is 10 times the area of the small cylinder. When the cylinders and pipe are filled with hydraulic oil you can push the small cylinder rod and the large cylinder will extend.Now push the large cylinder rod and the small cylinder will extend. The difference is that since one cylinder is 10 times the area of the other it needs 10 times the volume of oil to travel a similar distance. So push the rod of the small cylinder say 10 inches and the large cylinder will extend 1 inch. Now to your question about force. Push the small cylinder rod with a force of say 100 pounds and the fluid builds pressure equal and opposite in all directions. So the large cylinder can support 1000 pounds. How can you get more? Well you actually get the same "work done" by both cylinders. Force of 1 travelling 10 = Force of 10 travelling 1
Answer:
The pressure on piston 1 is always equal to the pressure on piston 2. ... It is equal to the force on piston 1, multiplied by A2/A1. Hydraulic systems are called force multipliers for exactly this reason. A small force can be increased by using hydraulics.