Hydraulic Definition and 314 Threads

Homework Statement ok so it isn't exactly a problem. i just need to know some equations i can use in relation to a hydraulic breaking system i don't mind what, but if someone could just give me a calculation i can do for an assignment that would be great. thank you Homework Equations...

I want to build a pump system using the water pressure from a 36 inch deep pond (up to 96" weather permitting) to pump water to a holding tank 100 feet above the 36" water level. after reading thru 15 pages of posts "water pumps" etc. on PF my head is spinning. At the dam there is access to...

Hello my name is Scott , I was trying to post a question , but after joining the physics forum - I think this site is for posting questions not finding answers until after posting it , so here we go. Maybe someone can answer this , at work I have a bet ( lunch ) on principles of...

How can we vary the speed of hydraulic motors running through a constant output pump??

A hydraulic lift has two connected pistons with cross-sectional areas 5 cm2 and 650 cm2. It is filled with oil of density 720 kg/m3. a) What mass must be placed on the small piston to support a car of mass 1400 kg at equal fluid levels? 10.77 OK b) With the lift in balance with equal...

Homework Statement In the figure below, an open tube of length L = 1.8 m and cross-sectional area A = 4.6 cm2 is fixed to the top of a cylindrical barrel of diameter D = 1.2 m and height H = 1.8 m. The barrel and tube are filled with water (to the top of the tube). Calculate the ratio of the...

Homework Statement A hydraulic lift has two connected pistons with cross-sectional areas 15 cm2 and 460 cm2. It is filled with oil of density 560 kg/m3. Homework Equations a)What mass must be placed on the small piston to support a car of mass 1100 kg at equal fluid levels? A:35.86 kg...

Homework Statement Right now, I am learning fluids and this question is just asking if i should use either hydraulic or pneumatic fluid for a device that will be able to lift a large fluid.Homework Equations For pneumatic systems, flow rate is most often expressed as standard cubic feet per...

I need to know how much stress a manual hydraulic car jack has while holding a 4000 lb load?

I am building a custom trailer, that will have "cages" ranging in size from 20" tall by 40" wide by 6' long to 39" tall, 40" wide, 8' long. And stacked up to 6 high and 2 wide. Now with my questions. I want to be able to open or unfold the cages kinda like a fishing tackle box out sideways of...

All car jacks use a modified bottle jack (modified base). A car jack like this: And a bottle jack like this, but with a modified base. I'm trying to find a bottle jack with the modified base for a car jack. I'm making a car jack for a school project but can't find any spare parts for...

Dear friends i am not a physics expert but a technical man. i encountered a problem in designing a machin for pipe pinching(squeesing) . the pipe has 20 mm diameter outside and 18 mm inside made by galvanized sheet (1.0350) with Re=140-300 N/mm2 yield strength. my machine use 3 pins for...

Homework Statement the hydraulic lift at a car repair shop is filled with oil. the car rests on a 25cm diameter piston. to lift the car, compressed air is used to push down on a 6cm diameterpiston. By how much must the air pressure force b eincreased to life the car 2.0m. Homework...

Hi all, I have quite a perfect understanding of hydraulic lift, yet there is one huge problem that is contradicting my understanding. for a hydraulic lift where you push on on side of diameter d1 piston, and the object on a piston of diameter d2, you get the equation: F1/A1 = F2/A2...

A hydraulic balance used to detect small changes in mass is shown in Fig. 9.31. If a mass m of 0.40 g is placed on the balance platform, by how much will the height of the water in the smaller, 1.0 cm diameter cylinder have changed when the balance comes to equilibrium? please give a detailed...

I'm a store manager for an industial distributor here in Houston. I have several lines for electric motors but don't get into any hydraulics. I had a customer ask me to quote him on a Vickers hydraulic motor and it made me curious as to why someone would choose to go with a hydraulic motor vs...

1.A man has a hydraulic jack to lift his car. If the smaller piston has a diameter of .75 cm, and the larger piston a diameter of 6.0 cm, how much force will the man have to exert to lift one corner of the car, weighing 700 lb?

I know that in a hydraulic system, oil is used rather than water because water can easily vaporised under extreme use. What the is the advantage/s of using oil over air in a hydraulic system?

Homework Statement http://img186.imageshack.us/my.php?image=gdgdfgta2.jpg the question is on the above link (PART B() Homework Equations deltaF=pg(A1+A2)d2 The Attempt at a Solution deltaF=pg(A1+A2)d2 i used that formula and found that the distance was 0.35m

Okay, so I'm stuck on the last part of the problem : A hydraulic lift has two connected pistons with cross-sectional areas 15 cm2 and 430 cm2. It is filled with oil of density 620 kg/m3. -------------------------------------------------------------------------------- a) What mass must...

Customer of mine is wanting me to confirm that a hydraulic fitting I am selling him will withstand 800F. The fitting is a standard issue hydraulic fitting (#12 BPP Female Coupling) that will be welded to 6" SHD 80 pipe. The pipe is on the exhaust side of a diesel engine onboard a cruise ship...

Anyone know how you get the formula F = rho*g*(A1+A2)d2 which is used to find the additional force needed to be applied to a piston to lift a car a distance of d2? Thanks.

Homework Statement A hydraulic lift has two connected pistons with cross-sectional areas 25 cm2 and 700 cm2. It is filled with oil of density 570 kg/m3. a) What mass must be placed on the small piston to support a car of mass 1300 kg at equal fluid levels? (answer: 46.4kg) b) With the...

i'm having difficulty with part C of this problem. A hydraulic lift has two connected pistons with cross-sectional areas 25 cm2 and 430 cm2. It is filled with oil of density 500 kg/m3. a) What mass must be placed on the small piston to support a car of mass 1300 kg at equal fluid levels...

Homework Statement A 12,000 N car is raised using a hydraulic lift, which consist of a U - tube with arm of unequal areas, filled with oil with a density of 800 kg/m^3 and capped at both ends with tight-fitting pistons. The wider arm of the U tube had a radius of 18. cm and the narrower arm...

Homework Statement A hydraulic lift has two connected pistons with cross-sectional areas 5 cm2 and 550 cm2. It is filled with oil of density 520 kg/m3. a) What mass must be placed on the small piston to support a car of mass 1500 kg at equal fluid levels? this was no prob. =13.61...

Homework Statement A hydraulic lift has two connected pistons with cross-sectional areas 5 cm^2 and 550 cm^2. It is filled with oil of density 520 kg/m3. a) What mass must be placed on the small piston to support a car of mass 1500 kg at equal fluid levels? Homework Equations...

At a ride in an amusement part a cart, with a mass of 150 kg, rolls down a long curved hill. The height of the hill is 50 m and the length of the track that the cart follows is 300 m. As the cart rolls down the hill, it experiences both a rolling frictional force and air resistance. The net...

Homework Statement The area of the piston in the master cylinder is 1.8cm^2, and that of the piston in the brake cylinder is 6.4cm^2. The coefficient of friction between shoe and wheel drum is .50. If the wheel has a radius of 34cm, determine the frictional torque about the axle when a force...

Homework Statement Piston 1 in Figure P9.24 has a diameter of 0.32 in.; Piston 2 has a diameter of 2.0 in. In the absence of friction, determine the force, , necessary to support the 500 lb weight. Picture http://www.webassign.net/sf/p9_24.gif Homework Equations F1=(A1/A2)F2...

Homework Statement 1) Consider the hydraulic lift which has a smaller piston of area A1 and a larger piston area A2. Initially the two pistons are not moving. Show that in order to raise the larger piston by a distance d2, it is necessary to apply a force △F = ρg(A1 + A2)d2 on a smaller...

Homework Statement A 55 kg cheerleader uses an oil-filled hydraulic lift to hold four 110 kg football players at a height of 1.0m. If her piston is 16 cm in diameter, what is the diameter of the football players' piston? Homework Equations F1/A1=F2/A2 A=pi*r^2 F=mg The Attempt at...

I need to build a customized hydraulic pressure resistance tester in the lab. The idea is to measure easily but with a good reliability the resistance to hydraulic pressure (either external pressure on the water drops or the pressure caused by a column of water for example) of different paper...

Hi, I've been trying to figure out a formula which describes the relation between the area, load and negative psig of the vacuum created in a vertical cylinder with the top port plugged and the bottom draining to tank (fig 1). I searched around for a formula describing this, and upon having...

The load bearing piston in a hydraulic system as an area 50 times as the the input piston. If the larger piston supports a load of 6000N, how large a force must be applied to the input piston? Since the area is 50 times as large i used a ratio 10:50 Using the formula F2/F1 = A2/A1...

How fast does a hydraulic machine work? The model i am thinking of is a simple two-sided setup, where the surface areas of the two platforms are different and a tube connects them. In terms of movement of the two platforms, how fast can the machine work. I am just looking for an approximation...

About those hydraulic devices that are used for lifting cars and such; how can you calculate the maximum speed at which those will operate?

To all: I’m studding hydraulic systems and it call my attention that in between cycles, when there is no need of pressure, the pump keeps pumping fluid at high pressure and since the processes doesn’t need it, the fluid is sent back to the tank over an over again until the processes needs...

The hydraulic analogue (check it out on wikipedia for an indepth explanation) compares between electric circuits and fluid flow. It maps voltage to pressure and current to water flow. I have been trying to take this analogue into applicability and use circuits from electronics and use them in...

Hi Friends! Can anybody tell me the download link for "Sperry Vickers Hydraulic Manual" dealing (oil) Hydraulic valves, actuators, pumps etc? Or any equivalent manual from Rexroth or any. Please! Thanks & Regards. P.Ramesh

Hello, I am new to this forum. I read the thread about the water flow in a rectangular tube because I wanted to correlate what was being said into my own problem. My question I believe is very simple: I have a rectangular tube that has inner dividers, let's say that my tube has 6...

i'm a mechanical student, and given 1 assignment to design a [SIZE="5"]hydraulic actuator. i need to calculate t load or force, so that i can choose the most suitable nuts and screw to assembly it. do u all have those kind of drawing and the formulas for calculation? please help! it's...

Is there such a thing? i have had a search but found nothing, i can think of a way that one would work, but i need one that can (step) 90 degrees in 25 milli seconds and hold possition until the next step is called for. anyone that can help will be rewarded with one of my fantastic chili cakes.

Hi guys, hope all are fine. i m new here and don't know much about the rules. well according to the question i have, i thought its the right place. i ll never mind if it is moved. anyways today i studied the simple laboratory hydraulic bench... i got struck in the part where plunger is...

The auto industry will be using this method to contol inlet and exhuast valves, i think 6000 rpm is the limit so far with a 48v (coil), this system has many advantages ie variable valve timing/ dwell, what are the limitations of this idea and could it be retro fitted to cam shaft engines?

Imagine a bar, say 3inches dia by 15inches long, the bar is turned down to 1inch dia 3inches in for 3inches, and again at 9 inches for three inches, this forms 3, connected (pistons), this piston assembly is enclosed in a cylinder the outer pistons are moved by internal combustion using the 2...

Hi, I have here a problem that I've been working on, and am not sure if I've gone about it correctly. The method I chose seems too simple, and I was wondering if someone could go over the answer that I've found, and let me know if I'm doing this right.The problem: The piston of a hydraulic...

A 2000 kg car is raised 1.5 meters high on a hydraulic jack, which has a large piston with a diameter of 30cm. The small piston has a diameter of 5cm (btw the reservoir is filled with oil) d) When the car is raised by 1.5 m, what distance will the small piston move? Is it simply that you have...

A hydraulic lift has two connected pistons with cross-sectional areas 25 cm2 and 630 cm2. It is filled with oil of density 690 kg/m3. I've found that approx. 63.5 kg of mass must be placed on the small piston to support a car of mass 1600 kg at equal fluid levels. but then it asks...

A hydraulic lift has two connected pistons with cross-sectional areas 25 cm2 and 630 cm2. It is filled with oil of density 690 kg/m3. I found that about 63.5 kg of mass must be placed on the small piston to support a car of mass 1600 kg at equal fluid levels. But then it asks... With...