Mechanical Definition and 1000 Threads

I am not sure if i can explain my question properly. I am studying the Generators section in the magnetism chapter. As i mentioned the statement "The rate at which work is done is exactly equal to the rate at which energy is dissipated in the resistance". When the term dissipated is used does it...

I just need any simple calculation that can be made, anyone who willing to help me out please contact me

I'm wanting to get a winch for my truck for vehicle recovery, but they are expensive. I know if I get a couple of snatch block pulleys, I can get a "smaller" (and less expensive) winch. My problem is that I don't know if the cable and pulleys need to be rated at or above the winch capacity, or...

Hello, I have completed the question below. I am just unsure on whether i am correct or not. I am unsure on Mechanical Advantage. As i have seen a few different equations. Question: Answer: a) Velocity Ratio = $$\frac{\text{Distance Moved By Effort}}{\text{Distance Moved By Load}}$$...

I thought of using hydraulic Ram n actuators but was informed no power available on some site. I am thinking if we can use pulley mechanism from back that connects to top of overhead. I hv modified the container n attached screenshot of how it has to be. Please help if you know of a way to lift...

How will the MA of a fixed pulley change if I apply the effort horizontally? Intuitively, I feel horizontal effort should be lesser effort than vertical effort.

Summary:: Hi I’m in second year mechanical engineering and I really need help with this question! Sorry about my handwriting in the attachment I’ve put in, I've written the question out but there is an image of figure one on the file attached. Many thanks! [Mentor Note -- Thread moved from a...

I am at my wits end with trying to find this formula. So far all I've gotten is I need to figure out mechanical power, maybe torque? I can't figure out the formula for this motion as it is like negative leverage. I want to build a machine that can do this thousands of times so I also need to...

I've had a question bugging me lately and no matter how much I google, I can't seem to find an answer. I'm sure this probably isn't possible, and my logic is probably flawed (Earth sciences isn't my forte), so I figured I'd ask you fine folks here. First, my understanding of wind, it's caused...

How do we explain resonance of a complex system (say a bridge) at the atomic level? What's happening to its molecules when it's oscillating at resonance, and does that have anything to do with the frequency at which the molecules oscillate in the material?

I solved for both heights: h1 = (1.85x10^4)m, h2 = (5.10 x 10^4)m Question is knowing ME = PE + KE for ball at h1 (angled 37 degrees), is it safe to assume there would be no KE as velocity would equal zero at the highest point? So the mechanical energy = mgh ? Would it be the same for ball at h2?

a.) The potential is a delta function, so ##V \left( r \right) = \frac {\hbar^2} {2\mu} \gamma \delta \left(r-a \right)##, therefore ##V \left( r \right) = \frac {\hbar^2} {2\mu} \gamma ## at ##r=a##, and ##V \left( r \right) = 0## otherwise. I've tried a few different approaches: 1.) In...

Hi, So the question is to: derive the equations of motion for the following in terms of x1 and x2? The bar is assumed to be light and rigid. (NB. I know I posted another vibrations problem earlier in which I tried to use an energy approach to get to the equations of motion. However, we haven't...

Hi, I'm feeling pretty disheartened after failing my second college physics exam in a row (I have about a low C in the class with homework and labs). I'm a freshman in physics 1, my first college physics class, where we are learning mechanics. I took physics in high school but my teacher was...

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Summary:: Passed the FE, ready to take the PE. Hello, I had recently passed the FE exam, ready to start studying for the PE Mechanical exam. Does anyone recommend any specific study material? I just recently purchased the PE Mechanical reference textbook and looking into purchasing some study...

I am looking at the following exam the mechanical comprehension part and I am having trouble with some of the questions. Here is the link https://drive.google.com/drive/folders/1ITIf6mx4RmDoL96IYoH-eY6-jQPh7CUv. I am having trouble with the following 3. A woman sits in a dragster the beginning...

Hi, Which technology specializations within the mechanical engineering domain will be most demanded in the future? (I am looking for different technologies rather than for applications enabled by the technology. For example not 'robotics', but rather the technologies used for robotics) Thanks...

This is deer feeder pulley system I plan to make unless there is more efficient way to use the same 6 pulleys and pull load centered between the two poles

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My query here is, Suppose there is a 2 kg mass To oscillate it/vibrate it, it will take some force and it will have some natural frequency Now I increase the mass to 5 kg so to vibrate it, won't it take more force and so at the end, won't the natural frequency of the object increase? as its more...

I rented a unit at the 32th floor for 6 months. The door has only 2 locks. The top has a double lock. The bottom is a normal door lock. Now imagine a drunkard or robber that would just kick the door from outside. It is enough to break the lock as it's secure on just wooden frame. Do you know...

Hi! hope you are doing well , I'm trying to solve this problem ( mechanical problem) about structure with load F as it showing in the next figure , i want to determine to critical force F , the stability force ( which means if my load is bigger than the critical load my system will be unstable)...

I am trying to determine the flow of mechanical power through a structure like a drive shaft or even a simple lever. The components of the Cauchy stress tensor, ##\sigma_{ij}##, have units of force/area, so if I multiply by the velocity, then ##\sigma_{ij} v_j## would have units of power/area...

When we say that we apply force to a wall then we didn't transferred energy because of no displacement, but I think we somehow increase many types of energy of the wall. For e.g:- potential energy of particles in wall e.t.c. So according to me it means that we defined work only for mechanical...

What is the strongest actuator (that can exert a controlled amount of force & be able to start/stop linearly or rotationally) that an infinitely advanced civilization could create, and how (what object/process) would they do it? It must be non-lethal or be shielded to be non-lethal at a distance...

I am currently an ambitious sophomore in high school aspiring to become an engineer. Generally, I love physics, chemistry, biology, and I'm interested in computer science. I am interested in aeronautical, biomedical, chemical, electrical, environmental, computer, mechanical, materials, nuclear...

We say that principal quantum number tells us the average distance from the nucleus, so the sub shells of some principal quantum number say 3 has 3 sub Shells 0,1,2 and in 3p sub shell their will probability of finding the electron near the nucleus which doesn't mean electron will find in region...

Here the upward force on the camp is Tsinx <=360 Therefore T(max)=720N Here they have taken the equation that T-mg=ma This shows that the man is climbing due to tension. But I can't visualise how tension helps in climbing. Isn't it our own energy that helps us to climb. The muscle energy gets...

This was a marvel of technology for the time. Leave it up to the Greeks to invent something like this, they were at the forefront of innovation in the ancient world. https://en.wikipedia.org/wiki/Antikythera_mechanism

I understand that the turbine drives rotational motion of a low and high speed shaft which rotates within the generator, but how exactly, and with what components/materials does this create electrical energy? Is there a minimum required rotational speed or torque required to generate...

Summary:: From Physics to Mechanical Engineering Hi All, I am in search of some guidance to start my education/career in Mechanical Engineering. I have an undergraduate degree in Physic and would like to go for Master’s in Mechanical Engineering if possible. Does anyone have an experience...

So the Bernoulli's Equation.. My question : Are the terms on the left hand side equal to the total mechanical energy? So can I rewrite this equation as ?

Length of wedge/width of wedge = mechanical advantage

Hello everyone, This year I'm planning to apply for the bachelor program of IPSP. Since my high school is not qualified by DAAD, I have to complete at least one year in any other university and apply through uni-assist. I'm already in my second undergraduate year of Mechanical Engineering and...

Greetings, I'd like to simulate a complex mechanical automaton with lots of gears, cams, levers and springs. Most of the parts are going to be 3D printed except for some metal springs, rods and bearings. I want to make sure everything fits together and works as expected. Here is just a small...

Hello. My attempt at the solution is as follows: l = 160m Q= 300 ls-1 R= p2/p1= 6+1.01/1.01 = 6.94 (2dp) d = Unknown Pressure drop = 0.3 Bar 0.3 = 800*160*300^2/6.94*d^5.31 0.3 = 1.152x10^10/6.94*d^5.31 0.3 ( 6.94*d^5.31) = 1.152x10^10 6.94*d^5.31 = 1.152x10^10/0.3 d^5.31 =...

I asume the upper right pulley wire loads will be split in two equally. Therefore, the sum of the loads above pulley equal T1+T2?. To me it appears as if the setup is almost like a 2 to 1 ratio. However, the wires on the left side which are anchored, split the load of the other half of the 2 to...

Hello, I want to do what a mechanical engineer does but with the electromagnetic force. What should I study mechanical or electrical engineering? An ideal job for me would be designing the magnetic system for motion in a maglev train, for example.

Hello, I am curious if I have this correct and if it has a name. A thin walled cylinder is spinning on its axis along its length in a closed system. It begins to draw itself in converting its invariant mass to kinetic energy. In polar coordinates ##E=\gamma_\theta m c^2, L=\gamma_\theta m...

How to know if I’m more inclined towards mechanical or electrical engineering?

Hi all, just came across this timer while on a site-visit. Any idea how to read this thing? PS: if it is not a right section, please move it to the right one as I was not sure where to post this. Regards, Abdullah

I don't know how the bottom two pulleys affect the top one. From what I know, the three ropes should have the same tension, the force of the body, divided between them. So if we take top one, it should have that tension on both sides, but also should support the other two pulleys below it. That...

Hello everyone! I am trying to figure out a work load / Pulling ability of trailers for the company I work for. We produce Electric bikes that have attachable utility trailers.. The general Wattage output for these E-bikes is 1000w. The trailers Mechanical advantage = 62.15MA. (WR=11 & AR=...

Hello everyone, I'm trying to design a plastic shredder machine, but I'm stuck on how to determine the cutting area of my shredder. I've already made some research, and I think that the cutting area depends on the blade thickness and the plastic thickness. As for why the blade thickness is...

I saw this general formula: ##w_{0} = \sqrt{\frac{k}{m}}## In my case both masses after collision create connected system, so ##w_{0} = \sqrt{\frac{k}{m+M}}## Plugging it into ##\omega = \sqrt{\omega_{0}^2 - \beta^2}## gives : ##\omega = \sqrt{\frac{k}{m+M} - \beta^2} = \sqrt{80 - 21^2} <...

Can someone double check my calculations? I will skip ##\theta## shift angle in all calculations for simplicity. ##x(t) = Acos(\omega t) \quad \land \quad \omega = \frac{2\pi}{T} \quad \land \quad A = \frac{1}{50}m = h## 1.1: ##x(\frac{1}{4}T)## = ? ##x(\frac{1}{4}T) = Acos(\frac{2\pi}{T}...

So I am almost sure I know how to solve this, just curious about the maximum velocity. Anyway, if you could double check my calculations, here it is. ##T = \frac{t}{n} = \frac{10s}{15} = \frac{2}{3}s## ##\omega = \frac{2\pi}{T} = 2\pi \frac{3}{2} = 3\pi## a). position at ##t = 0.8s##...

Yesterday, I found a device in the recycle bin of our school’s art classroom. It’s a broken wooden hydraulic mech arm someone built a couple years ago. After some fixing and filling the syringes with water again, this is how it looks now: Here’s a video of it working: I am aware of...