Hydraulic Definition and 340 Threads

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?

This kind of belongs to halfbakery.com, but it is down now. (I found on archive.org that) hydraulic pump (like the kind used to lift cars) forces and the surface areas of the two ends works by the equation F1 = F2(A1/A2). Say you had a .025 m^2 (end 1) surface on one end of a hydraulic pump...

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 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 urgent..

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...

I have the following unexplained phenomenon: (please excuse incomprehensible expressions I´m not a native speaker) Experimental setup: A 6 meter long measurment pipe is filled with a hydraulic fluid and has a square cross section (30mm²). The fluid in the pipe is pressurerised to 40 bar...

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...

Hi ... I attached with this text letter the mechanica system diagram that including or working by Hydraulic unit ... Its for holding about 8 tons , Metal Sheet's Coil . So I asked about How To Choose The Suitable Pump For This System . Will Be Thankfull For Your Help ... And Also For...

1st of all - Hi everyone, this looks like a great resource, hopefully i'll be a frequent visitor! Anyway, the reason for this post is to findout if anyone knows of any texts concerning the more practical (design) side of hydraulic damping used in suspension systems. Im at uni in England at...

Please, say me what are shear forces. I've been looking for it because I was studying a phenomenon called hydraulic jump. In this example, are these forces caused by the cohesion forces?

Hi ... Want to know about " How I can calculating ... Or ... Using Wich Formula " that is making me able to finde the relationship between the Haudraulic Pump Pressure and the Piston Pressure .? on what i should depend when i want a piston and a hydraulic pump For Example : I have a...

Can anyone lead me to some good hydraulic piston/ram diagrams or schematics? thank you

Is there any difference in pressure in a pressurized tank/piston filled with a liquid between the bottom of the tank/piston and the top of the tank? My problem is that Pascal’s law states that the pressure exerted on an enclosed fluid is transmitted undiminished throughout the fluid and acts...

Hi, I am a young 19 old student engineer soon to begin university after a summer break. As I have a love for thrill and engineering advancements I would very appreciative if you can help me with my request. Basically, having followed the progression of the rollar coater launch...

These are the problems I have to choose between for a school project entering a competition. There are other problems but these are the ones I'm torn between. Hydraulic jump When a smooth column of water hits a horizontal plane, it flows out radially. At some radius, its height suddenly...

hydraulic problem, need help! a hydraulic chamber in which a spring (spring constant = 1456 N/m) is attached to the input piston, and a rock of mass 39.4 kg rests on the output plunger. The piston and plunger are at the same height, and each has a negligible mass. By how much is the spring...

In a hydraulic system the piston on the left has a diameter of 4.5 cm and a mass of 1.7 kg. The piston on the right has a diameter of 12 cm and a mass of 2.5 kg. If the density of the fluid is 750 kg/m3, what is the height difference h between the two pistons? can someone please help me with...

I'm unable to find a hydraulic seal with a maximum operating pressure any greater than 11,000 psi, and that was a specific type of "vee packing." Does anybody know of a type of seal that can withstand more?

Will u please help me in telling me how do hydraulic doble-acting pumps work EXACTLY and the explanation of the spools function.

A hydraulic lift has two connected pistons with cross-sectional areas 25 cm2 and 420 cm2. It is filled with oil of density 730 kg/m3. a) What mass must be placed on the small piston to support a car of mass 1000 kg at equal fluid levels? b) With the lift in balance with equal fluid levels...

Ok, it's a two part question, i did the first part with no problem, which is how much force it takes to hold an object on the other end up, knowing the diameters and the mass of the object, i just used F1/A1 = F2/A2. Now, the 2nd part asks how much force is needed to support the object at a...