Mechanical Definition and 1000 Threads

is there any work from home as a mechanical engineer?

Ok, first time posting...hopefully I do this correctly, as I have found myself in a bind on this one. It is a question comparing the mechanical energy of two masses falling in different ways in which you are given the option of greater than, less than, or equal to. Homework Statement The...

Homework Statement I have a task of essentially proving that bigger motor = bigger vibration. I have certain data such as the running speed of the motor (), moment of inertia of the rotor, weight of the motor and shaft and the diameter of the shaft. Homework Equations |X| = \frac{me}{M}...

Hi. I've just started working with the MPR121 capacitive sensor (at the moment I'm working with the MPR121 breakout board sold by sparkfun) for an application that involves detecting a toolhead's distance above a work surface. It's not a problem to ground part of the tool head and some initial...

Hi, I need a little help trying to determine the possibility of incorporating touch and motion sensor technology in material like rubber, plastic or glass. My question is as follows: Is it possible to incorporate touch and motion sensor technology in material like rubber, plastic or glass...

I am trying to consolidate my understanding of kinematics and mechanics. If there is no such thing as friction, and the only force in the universe is gravity, then can we prove using the laws of kinematics and the definition of potential energy/kinetic energy that the mechanical energy of...

studying mech engineering but want to be landscape architect or agriculture engineer Next year I will graduate with a bs. in mechanical engineering, what advice can you give me if i want to become a landscape architect or an agricultural engineer( courses i can take ,or ways i can squeeze into...

hello all, I am a new here. I just graduated as a physicist. I know that my bachelor on physics will not give me a good job, I am thinking to go from being physicist to be a mechanical engineer. Is that easy? does anyone tried that? what courses do I have to take? and the most important, is this...

I'm interested in either of these disciplines, but I'm stuck between the two. What exactly is the difference between these two fields of engineering and what are the pro's and con's of each? I'm relatively good at math and physics, so in which field would I be able to utilize my skills more? In...

Hi All, First off, thanks to all the old hands at physicsforums, you guys are truly an amazing resource. I was thinking about a system today that at first glance, appears to violate local conservation of energy for two mechanical wave pulses interfering with each other. Consider a...

I just thought Id post some of my thoughts on what I feel is needed for undergrad physics majors who are interested in the more practical side of what we are learning in our highly idealized and theoretical coursework. I also would like to point out what tools I think are necessary for people...

Is this enough of a reason to take up Mechanical Engineering?? I'm going to do an MS in Mechanical Engineering, and so I need to write an SOP )Statement Of Purpose/ Application Essay) for grad school admissions. To be frank, during undergrads, the sole reason I took up mechanical engineering...

Hello, I just recently transferred to U of Calgary and I have one week left to choose which engineering discipline I want to go into. I've narrowed it down to EE and ME. I think I like both disciplines equally and I have a major interest in both. What do you guys think is the 'better' degree...

Research in mechanical engineering-- what is it all about(just general idea) Hi, I'm a student of mechanical engineering and I'd like to do an MS degree following my undergrads. Up till now, I've had experience in only simulation based research i.e. during my final year project, my...

I'm primarily interested in engineering mechanics because I like the narrowness of the program to classical mechanics rather than a broad range of subjects including other areas of physics as well. My only concern is the job availability. What are the pro's and con's to engineering mechanics...

Hi, I am trying to solve a problem, where i need to find the switching time of a mechanical switch. A voltage of V is applied to an acutation pad, and the movable beam is assumed to have a spring constant of K. I have attached the photo for better clarity. Please help me out...

Hi, I'm a high-school student and for a Careers assignement we need to interview someone who has a job in a career area we wish to pursue. So, I'm hoping to find a person who a mechnaical engineer who's willing to give answers with some depth and though. An automotive engineer would be even...

Conservation of Mechanical Energy and Momentum in total inelastic collisions? In an inelastic collision, such as a bullet getting stuck in a block hanging on a string, has two types of conservations? -Total Inelastic Collisision Conservations: (1) Conservation of Mechanical Energy: Uo+Po =...

Hi, I was just wondering, is mechanical energy conserved when two cars of equal mass and moving at equal speed collide head-on and in the process both come to rest? I'm inclined to say it isn't conserved because kinetic energy is converted into other forms of energy (e.g. heat and sound)...

I know there are a ton of these posts, but I still need help as I have about one month to decide my degree ( I'm portuguese and I'm in the 12th grade) ... My favourite subjects are by far maths and physics (probably physics) and I would say that I'm very good at them. The problem is that my...

I know there are a ton of these posts, but I still need help as I have about one month to decide my degree ( I'm portuguese and I'm in the 12th grade) ... My favourite subjects are by far maths and physics (probably physics) and I would say that I'm very good at them. The problem is that my...

Hey guys, I have a test tomorrow in physics and although I'm a good student, physics is getting tougher this year (high school 1st year for me) and our teacher is really bad, her teaching skills are very poor. Plus, I've been absent for a couple of days when we had physics and I can't solve the...

Homework Statement A 30g bullet is moving at a horizontal velocity of 500m/s come to a stop 12 cm within a solid wall. What is the change in mechanical energy of the bullet? Homework Equations Mechanical energy = 1/2mv^2+mgh The Attempt at a Solution The question is for 6...

Hi. I just finished first year mechanical engineering and I'm at a bit of a crossroads. My true passion is in particle physics but for some personal reasons I didn't go into Pure Physics, I went into mechanical engineering. At the moment I'm pondering switching into Electrical because a lot of...

1. When a 0.20-kg block is suspended from a vertically hanging spring, it stretches the spring from its original length of 0.050m to 0.060m. The same block is attached to the same spring and placed on a horizontal, friction-less surface. The block is then pulled so that the spring stretches to...

Hallo everyone! I'd like to build a simple generator for a project. Like this picture here: http://www.interactives.co.uk/images/DSCN7717crr.JPG I have everything I need but one think keeps coming into mind... Mechanical resistance?(Not friction due to material's touching each other like...

Mechanical Engineering/Engineering in general SUCCESS STORIES!? Hi, I'm Aaron, a sophomore mechanical engineering student at Pitt. I have struggled tremendously with my grades and trying to get everything straightened out academically. Right now, my cummulative gpa is a 2.05. I have been...

Homework Statement Hello i am majoring in engineering and i would like to know from the mouth of an engineer what you guys do all day, what is the average work day like? is it all calculations and math or is it hands on building things? Homework Equations The Attempt at a Solution

Hi, What kinds of mathematics are used in Mechanical Engineering? How often is math used? Is it used almost every step of the way? I'm a physics and mathematics fanatic and I am trying to find a career with a lot of mathematics, physics, and mechanical kind of stuff. Thanks,

I just finished my freshman year in civil and I have an internship at a civil and land surveying firm lined up for the summer, but I’m thinking about switching to mech next year and want some advice. Either way, as far as the summer job goes, I’m sure experience in an engineering firm would be...

Hello all, I am a Mechanical major at Drexel University. I am throwing this up for debate...Which major has a better job market after graduation, mechanical or electrical?

Hi, I am considering doing mechanical engineering as a career. What is mechanical engineering like? What are some of the duties like? Is mathematics involved every step of the way? If so, what kind of mathematics are involved? I am trying to find a career that is interesting and involves a...

Well I am unsure which degree I should go after, I like Engineering Physics because its so broad and includes elements from ME, EE, and normal physics, and this makes me happy because I really I feel like I can learn more and have more job opportunities, but then again lots of websites have told...

http://en.wikipedia.org/wiki/Mechatronics According to the defintion, "Mechatronics is the combination of Mechanical engineering, Electronic engineering, Computer engineering, Software engineering, Control engineering, and Systems Design engineering in order to design, and manufacture useful...

I'm a freshman in civil engineering currently and I am thinking about mechanical as a possibility. This is going to be a long post, but stick with me and I’d really appreciate it. (If not, skip down and read the last two paragraphs.) The reason I chose civil in the first place was that I...

Homework Statement find tension in cable and velocity of B after 5 seconds. System released from rest. no slipping, neglect weight of pulley and cable.Homework Equations τ(t) = Iω Parallel axis theorem? The Attempt at a Solution Picture of problem: http://i49.tinypic.com/5ue7sx.jpgthe question...

Physics = Mechanical Engineering ? Hello, Something just occurred to me last night. A B.S. in physics covers almost the same material covered in a B.S degree in mechanical engineering. Think about: thermodynamics, statics, mechanics, etc. Of course the latter does have more coursework...

Homework Statement A string whose linear density is 0.00500 kg/m is stretched to produce a wave speed of 85 m/s. What tension was applied to the string. Homework Equations v=√(F/(m/L)) The Attempt at a Solution v=0.00500 kg/m m/L= 85 m/s I can't seem to re-arrange the...

Homework Statement The Attempt at a Solution So I've been interpreting the information in the problem as follows: F_{damping} = 4u' = μ(u'), k = \frac{4N}{m}. If the system is critically damped then μ = 2\sqrt{km} = 2\sqrt{\frac{4N}{m}m} = 2\sqrt{4N}. Now it seems as though the spring...

Hey guys, this is my first post on here. I'm a second-year physics major at a large public university in the U.S., and I am considering changing my major to mechanical engineering (with a physics minor. I faced this decision at the same time last year. If I were to switch I would have to stay...

If you were to mate a 1 ½” black iron pipe to a 1 ¼” black iron pipe using a 1 ½” coupling and a bushing reducer, how much bending torque would be needed before one of the parts or connections failed? That is, if you held the 1 ½” black iron pipe in a fixed position and the applied a force to...

Hey. This is my first post, I'm a Senior in Mechanical Engineering, I will help others as far as I can. I'm trying to solve the problem from the picture. The shaft is loaded with 2 transverse loads, 2 moments and 2 torques. The critical point is immediately to the left of "B". The material is...

Hello all, I am a pre-junior mechanical engineering student at Drexel University. I am a non traditional student working on my second bachelors and absolutely love it. I find myself amazed by the fact at my age (33) I have the opportunity to study full time. I will just say for anyone...

Homework Statement A) A circular rod is subjected to a bending moment of 315Nm. What is the minimum diameter of the rod required so that the maximum stress does not exceed 200N/mm2? B) If the Modulus of Elasticity for the material from which the rod is made of is 100kN/mm2, what radius...

Hello name is Thomas and I know I want to be an engineer. I am just torn between becoming an electrical engineer or a mechanical engineer. I know the term engineer covers many fields but I was just wondering if maybe someone could give me there opinion. If there are any engineers that could...

For example, as well known the period of the pendulum is (in linear approximation): T \approx 2\pi \sqrt\frac{L}{g} \,. So, no speed of light appears explicitly. What I'm wondering however is if and how it might be implicit? In the sense that after all the tension in the rod depends from...

Hi Everyone, I am at a road block in my life where I have no idea what to do next in terms of my career plans. I graduated with a Bachelors in Biochemistry, and recently, I realized there was nothing that spoke to me within this field which I could obtain as a career. I looked into...

Hello, I am a high school student and am trying to complete an assignment to interview someone in a career field I am interested in - mechanical engineering. Would anyone be willing to answer these questions for me? A PM would be fine if you can. I really appreciate it! What are your...

Hello guys, I need the quantum mechanical description of the Cesium atom/gas with its hyperfine states, and preferably with some density matrix. I don't really know where to start my search. I googled a lot, and looked for articles and books, but failed. Any help is highly appreciated...

Consider the following picture, where the same platform and man is being lifted by a crane and by the man standing the platform, who can pull on a rope connected to a pulley in the ceiling. My question is: Does the scenario in which the man has the pulley have a mechanical advantage over the...