Mechanical Definition and 1000 Threads

how liquid based systems e.g. hydraulic systems, can change the force which applied on it is smaller pistons, and transfer much force to a larger piston in area, my textbooks says 1:10 ratio hydraulic system can deliver ten times the force applied on the smaller piston to the large piston. it...

I mean its part of the equation. 1/2 x k x xm x e^-bt/m for mechanical energy

Hello, I have a mechanical college assignment for calculating the slope and deflection of a simply supported beam. I have solved for both deflection (y) and slope (dy/dx) but I am not sure if they are correct as I cannot confirm it with simulation software online. The assignment requires me to...

Hi, my name is Maya. I'm a 2nd yr mechanical engineering student

Hi. I'm trying to derive Snell's law from a mechanical model: An axle of length ##d## with two wheels that run at speeds ##v_1## or ##v_2##, depending on the medium they are in (##v_1>v_2## for the moment). The ##x##-axis is the interface, ##v_1## for ##y>0## and ##v_2## for ##y<0##. The wheels...

hi, im currently working as mechanical drafter and i'm still learning. :smile:

A thread made by a @JeroenM started in the Mechanical Engineering forum has fallen into a black hole...

Hi! Senior mech. engineering student here, ready to annoy everyone with stupid questions :cool: Kidding, kind of. I've been a lurker for awhile and found many posts here helpful in my time at school. I just posted a question about my heat transfer project using hot air piccolo tubes as wing...

Dear all, I am interested to know if there is any spring available which is just a rectangular block - Looks more like a mechanical key. Preferrably made of metal. The dimensions / numbers shown in the following image are indicative: Pl. let me know if you have come across some applications...

Hello there. I have a Master degree in Mechanical Engineering and work on the energy assessment area. But i have a huge interest in subjects like General Relativity, particle physics, Cosmology and Astronomy.

I'm looking for a way to machine a spherical product made of SUS304, with a required hardness of 60 HRC after heat treatment. I've selected a specialized turning tool designed for machining hard metals, but I still can't achieve a profile tolerance of 0.05 and a surface roughness of 0.1. Can...

Can someone explain how squat machines like these seem to allow people to lift an extraordinary amount of weight (more than they would be able to with free-weights)? Would really appreciate a breakdown of how the force applied by the lifter translates to torque across the levers and gears. Thanks!

For as long as I can remember, mechanical manufacturing has held a special place in my heart. Growing up, I was captivated by machines—their precision, their power, and the way they transform raw materials into complex products. This fascination wasn’t just a fleeting interest; it was a...

Could the rotation of tires be used to generate electricity and lengthen range?

Hello everyone, I'm a fifth-year student at Iowa State University, double majoring in Mechanical Engineering and Physics, and I will be graduating this year. I realized my passion for physics late into my academic career, which is why I'm in my fifth year—I've been working hard to catch up...

I recently came to know about Waters wind turbine. That turbine has been invented by Michael Waters. In their website, there are many advantaged written about it. But, when I started to search outside to check how effective it is in real condition, haven't got much information instead of a few...

Hello, This is my first post on this forum, and I am looking for some career advice. I have a degree in mechanical engineering and 4 years of experience in the medical device manufacturing industry. Recently, I have begun the journey in becoming an entrepreneur a separate field due to the...

Assume there are two objects on the same surface, one is a cube and the other is a sphere. Both objects have the same mass m. The required applied force to the center of mass of the cube for it to start sliding should be equal to static friction force: μs⋅m⋅g. But what is the required applied...

DIY harry homeowner here. Always building something. Often with an engineering question I need resolved. Most recent challenge: how much sag on a 60-inch 2x3 pine board on edge. [Turns out there's a website to answer this question] So I look forward to picking the big brains on the physics...

In the formula above I have that the mechanical momentum of the horizontal force with respect to ##C## is always ##0## because the point of application coincides with the pole. Also, the mechanical momentum of the costraint reactions is ##0## because the costraint is smooth so the reaction is...

Suppose I have a mechanical stress tensor \sigma. Say I have the stress tensor for viscous flow: \boldsymbol{\sigma}=-p\mathbf{I}+\frac{1}{2}(\nabla\mathbf{u}+(\nabla\mathbf{u})^{T}) If the thermal flux is given by \boldsymbol{\sigma}_{th}=\alpha T\mathbf{I}, so I have a total flux as...

My 1979 Dodge Fireball D450 5.9l Motorhome. It has recently stopped running after having a starter issue. I replaced the starter, starter relay, starter solenoid, spark plugs, distributor and router, battery, and cables, and it still won't start. The fuel pump and filter are good. Also, I have...

I'm developoing one mechamical device, that we'll put two nutrunner in one gear. One spur gear will rotate the gear and put the nutrunner and one position. Each nutrunner will fix one bolt with 70Nm. I need put one motor in pinion, but i need consider the moments to define de size of the motor...

TL;DR Summary: I'm trying to figure out why this answer is not correct for a mechanical impact: "Conservation of energy and conservation of momentum can be used to find the relative velocities after the impact" Hi! I have a multiple choice test that asks...

How did you find PF?: Google I am working on a project that requires us to protect components from high heat. We were thinking on using sodium bicarbonate, but our module needs to be exposed FIRST to 85C for long periods.... then the high heat exposure will be present. We believe this...

At first I thought these values should be equal because I thought thermodynamic work is simply the work done as the gas compresses or expands. That is, the work done as the gas expands ( and the mass gets lifted up) should be equal to the work done against gravity as the mass goes up, and the...

Hello, My name is Ron. I am currently attending Old Dominion University majoring in Mechanical Engineering with a minor in Engineering Management. I am returning to obtain my bachelors at age 54 and currently hold an associate in Drafting and Design. I have worked in the construction industry...

Hi! My name is Kiran. I am a mechanical engineer working for various practical application projects such as renewable energy products, efficiency improvement, customized machines, etc. On many circumstances, I encountered with a problem of solving some advance and complicated physics. And in one...

Just a guy who likes exploring. I hate math, but enjoy viewing mechanical models of things.

Hello everyone, I heard about PF from Reddit. I'm a mechanical engineering enthusiast and looking forward to engaging with everyone here!

Hello there, fellow physics enthusiasts, I am a mechanical engineer looking forward to pursuing physics academically. I am interested in gaining knowledge from this forum and connecting with students and scientists. Have a nice day, Madladkaiser

many pulleys at various angles multiply the initial power of the winch

Hi all, I need to derive an equation for the mechanical advantage between the force applied at the wall and the force at the piston for a linked system. I have attempted this but my equation suggests that the wall force increases expenantionally as the connecting rod approaches the horrizontal...

Is it correct that: density = [ 0.09 * (density of NaCl) ] + [0.91 * (density of water) ] volume = [ (volume of water) + ( { (volume of NaCl) / 48} * 9) ] Thank you so much for any advice.

Mechanical engineer working in pump industry

where can I get best research papers for my undergrade thesis in Mechanical Engineering?

Hi! Studying Mechanical Engineering at AAU. First semester

Mechanical Engineering working in the automotive industry with a desire for design and testing mechanical systems.

Hello everyone am Nappolean a New Mechanical Engineer Graduate here, nice to meet you all.

I started studying mechanical engineering, where I started thinking about things that might make me a successful and highly competent engineer in the near future. Then I started searching through artificial intelligence tools for useful sites for me as a mechanical engineering student, and your...

I have worked in the Aeronautical, Robotics, Mining, Printing and Petroleum industries.

What I did was split the problem into two seperate summations based on x & y coordinates: Tcos(25) - Tcos(55) - Px = 0 Tsin(25+Tsin(55) +Py - Q = 0, Where Q = 1860 I initially got an answer of 2391N, but it keeps marking me wrong for said answer. This is the free body diagram, (the previous...

I am going to do some experiment on mechanical mechanism , studying stresses Thing that in my mind Arduino Strain gauge Instrumentation amplifier I want to know that which Instrumentation amplifier i should use to get good output voltage from wheatstone bridge circuit and also easy to use...

Please see the attached sketch. Basically I have a system of three gear boxes, each with their own respective efficiencies. I'm trying to determine, at the end of this string of gearboxes, what the overall efficiency is. How might one go about determining this? Do you just take the average? 70 +...

Hello I'm Mike. I'm a Mech Simulation Engineer. I am grateful with the help from this forum which directly solve my problem. Hope I can gain more engineering knowledge and experience, and also can help others. Best regards!

First of all, the pulling force is 300N cos(30) = 260 N At this point, I try to find the friction force Fn = mg = 20kg * 9.81 m/s^2 = 196.2 N Then, Ff = μ * Fn = 0.5 * 196.2 N = 98.1 N So after canceling the horizontal forces, 260N - 98.1N = 161.9N And the acceleration will be 161.9N / 20kg =...

Good day everybody, In a nutshell, I have to take the Wiesen Test for mechanical aptitude before this upcoming 24th, so less than a week from now. I am aware that this might seem a really simple task, and the theoretical concepts are indeed really easy, but the issue would be the timing; I will...

Hi, I'm putting together some resources about theories and would like some help to make sure I don't make a mistake. In particular, I'd like to know if each of the electromagnetic, gravitational, mechanical and entropic processes applies to every physical process. So, for example, due to an...

Why when we differentiate ## E = \frac {1}{2}mv^2 + \frac {1}{2}kx^2 ## with respect to time the answer is ## \frac {dE}{dt} = mva + kxv ##? I though it would be ##\frac {dE}{dt} = ma + kv ##. Many thanks!

Hello again! I've found the capybara's EMA to be 0.71. Their mass to be 55kg. And their average speed to be ~3.0km/h. I want to figure out how many capybaras it would take to overcome Friction * Normal force of ~125,000N. How would I go about doing that...