Mechancal engineering Definition and 126 Threads

assuming wind is not coming perpendicular to the sail, how it generates lift perpendicular to the sail, as I feel It should rotate from the force of the wind is not distributing evenly across the surface of the sail. with direction of the wind being not perpendicular to the sail, creating a...

I am working on designing a roller which contains a spool of material which can be pulled out by hand (Freespin) and then retracted back in by a motor. The first thought was to use a one way (Sprag) bearing but this will not work as the free spool direction is the same as the driven thus only...

A linear Actuator lifts a door upwards against gravity with hinge axis horizontal. Actuator arm is fully extended when the door is fully opened and is horizontal. At this stage, the arm is seen a bit drooping due to weight of the door. How this drooping can be eliminated? Note that Actuator...

If we took a vortex tube and redirected the cold exhaust back into the initial compressed air flow, would it act as a positive feedback loop, causing the hot exhaust to become colder with time (up to a point!)? Conversely, if we took a vortex tube and redirected the hot exhaust back into the...

Hey guys, I’m a high schooler designing an experiment to test polarity modulation for em waves. Before I study complex methods of polarity modulation that involve the use of crystals I want to use a simple laser and rotating a polarizer while the laser differs in its intensity for brief...

Hello everyone, I’m working on a project where I need to use a cylindrical tube with a vacuum pump to suck in mechanical parts. The tube approaches the part, and the vacuum generated by the pump draws the part into the tube. I want to understand how to link the key parameters of the system: the...

I am currently building a dynamometer to measure the power consumption and rpm of a mars prototype. The plan is to place each wheel of the rover onto a pair of rollers but I am currently struggling with determining the optimal roller separation. If they're too far apart, the wheel might not...

Stainless steel has a protective layer on its surface, which is 3-4 chromium oxide atoms thick. How is it possible that such a thin layer does not rub off immediately when we touch it?

Basically, I thought of a weight as a energy storage. But realised you have to output that energy from the same part that inputs the energy. Now I have done some research and found two ways of storing and discharging mechanical work at the same time. First is the Huygens mechanism(maintaining...

The figure provided with the question is: I set up the following equation for path 4 ##U_{path 4}=U_{Fk1, path 4}+U_{Fk2, path 4}+U_{FIK, path 4}## where ##U_{FIK,AB}## is the unknown. I know that the work will be the same regardless the path for conservative forces, so I have: ##U_{path...

Hello! Hope I got this right. Completely new around here. The image that goes along with the problem is: What I have tried so far can be found below: I do not know if it is a computational error or a physics error, but I tried using WolframAlpha to solve for ##v_0## to validate and did not...

I am working on an electrical engineering project. However, I have come across a specific mechanical engineering problem. I have attached an image to describe what I want to do. I have primarily a stator core (made out of electrical steel laminated sheets) named part number "1". I have a...

I need to understand the mechanics involved in performing a wheelie. That includes analyzing the free-body diagram. And considering all the factors involved in performing this manoeuvre in motorbilkes.

I was checking bait cannons and potato guns on the internet because they are fun. Maybe one day I'll build my own. First of all, these cannons use multiple sources of energy (combustion using hair spray, dry ice, etc.). I'll just consider compressed air cannons because I think they are the most...

I'm trying to design a mechanism to translate reciprocating motion into a 45 degree rotation. Here's the idea: A pin will push against the part marked in red, causing part of the desired rotation. Then, when the pin is pulled back, its interaction with the blue part will complete a 45 degree...

Hey! I want to determine what bearings to use for this manual crane and the only thing i know is that it should be able to lift a wieght of 1000kg at max and that the winch should pull 1.24 m of cable/min. Im looking to find the force P to then determine C, and i think P is only the radial force...

TL;DR Summary: Mechanical engineering,robotics,mechnics,dynamics Hi guys , I'm new to mechnics and I want to learn it for building robotic arm , but I find mechanics book topics somewhat difficult for me , what I need to learn to get started as I'm a highschool student with basic level math.

I'm sorry I'm uploading lots of images because I don't know how to write equations here. PROBLEM DESCRIPTION I have to solve this problem: Figure P3.6: MY SOLUTION I did this: THE CORRECTION I got this as a correction: - Don't use the middle line in figure P3.6 in my calculations. -...

hey , I bumped into this forum while searching for something and thought it was a great idea to stick around and surround myself with amazingly smart people, its my honor to join you guys and thank you for reading

TL;DR Summary: Have a university project where we are calculating the speed of the arm at the end. I need some help on where to start on the calculations. We have tried to determine instantaneous center of rotation for the device. We want to find the linear velocioty of point B. There is a...

I had an idea thinking about heat transfer and how placing water over a hot surface will transfer the heat to the water. It got me thinking, in a case where water could not be an option for a medium could I use metal, which would still have a higher heat transfer to absorb more of the heat...

Summary: Each angle has a different type of corner, rectangular, circular, and triangular. Which one is the strongest? All three angles are mounted in the ground and made of the same material. The same force ‘w’ towards the ground is acting on all angles, which one is the strongest? Please...

Hi, I am trying to get the transfer function from a wall between rooms. From one side I have the force of a hammer as an input ,and in the other side of the wall (next room) I have an accelerometer. Is it possible to get the TF without know the damping, stiffness and mass of the wall partition...

From what I've gather the primary benefits to worm wheels are: - their ability to provide high reduction ratios - self-locking which can be useful for hoisting and lifting applications. - Operates silently and smoothly, which reduces vibrations Feel free to add any important ones I might've...

Greetings, while studying the stress in the rotating thing ring and find out the last equation that says I would like to understand why? Thank you!

Summary:: 12 ton rectangular frame is lowered by a 4 point crane attached to each corner of the frame. Frame will be lowered onto plastic supports, these supports have guiding ramps of 60 degrees to help the operator lower the frame in the correct spot. The frame has 4 feet, one on each corner...

Summary:: I am looking to take a engineering classes relevant to mechanical and or aerospace engineering. I am challenging my assumption that Statics & Dynamics is the most important and foundational/fundamental course to either mechanical or aerospace engineering (maybe fluid dynamics for...

Two things that I think I should say before I describe what I did: First, I do not have any physics-related background (but I have a degree in CS, and I'd like to think I have a good enough grasp on math to be able to understand equations describing motion of objects). So please forgive me if...

A block of mass M = 4 kg is pulled by a force F = 100 N forming an angle of 60 degrees with themhorizontal plane with friction coefficient 0.3. Determine the work of force F, friction force and normal force.

how to find a maximum load on a steel square tube that has one fixed end to the wall and another end is hanging free. suppose the beam is 2230 mm long and the load is applied on the beam on the free end w= 1040 mm. but there also a steel square tube that welded to the middle of the beam and...

Hello! I have a somewhat complicated robot project that I've simplified here to hopefully get a quick answer. I want to build a robot with two omni-wheels that looks like the following (not drawn to scale), where the black is the omni wheels at 45 degree angles and the blue is the robot body...

I have problem on this question on how to draw free body diagram. Can you please show me on how to draw free body diagram on this question ? The calculation part I think I do not have a problem with it. Thank you in advance ! I am really struggle with this question.

Summary:: Can anyone help me with this 3d Volumetric Strain and Volume Change. The is question is attached as a document below with the question and my attempt at the answer All questions and attempted answers are in the attached file below

Hi all, I'm currently designing a linear to linear transform mechanism (wedge cam design). Would like to check how much force required to push/ slide the roller down. To ease calculation, i have include some assumption: F2 = 1kg @ maximum compressed angle = 20degree F1 required = ? and how...

Hi all, I'm currently designing a cam mechanism. Would like to check how much motor rated torque required for the following design of snail cam ? To ease calculation, i have include some assumed factor as below. Two extreme condition (rotation degree) to compare. What is the motor rated...

Summary:: Please help me to determine the thickness of the material of the bicycle given, i need a step by step procedure. I know the formula required but can figure out the forces acting and reactions on the bicycle. The weight of the person riding the cycle is estimated to be 70-80kg Help me

Hello everyone, I'm a mechanical engineering student, I'm italian, so, sorry for my bad english. In this moment i am studying the following subjects: Mathematical Analysis II (multivariable calculus), Physics II (eletctromagnetism), Mechanical design and fundamentals of structural mechanics...

Is it possible to create following two shapes from glass using currently known glass mass production techniques? Shape #1: bottle with a prolonged neck that continues into the inner space, like this (cross section): | | | | /| |\ / | | \ / \ / \ | | |...

If you do the sum of vertical forces and sum of moments, you're always left with an unknown. Vertical Forces: Ray + Rby + Rcy = 59kN + 45kN (1) Sum of Moments about A: (59 x 1.85) - (Rby x 3.7) - (Rcy x 4.8) + (45 x 6.5) = 0...

M = r x F r = 0 ∴ M = 0 But this is clearly wrong. For some reason, the "reaction moment" must exist. Why? Where does it come from? More specifically, which force(s) produces the bending moment, and at what distance(s)? Does it come from the reaction force form the wall on the left end of the...

Summary: Make a circuit that counts the number of nodes in a standing wave generator I have a an assignment to complete this Term, the assignment consist in making a machine that would produce standing waves in various frequencies, (for example the typical motor connect to a string with...

Hi all, I'm new to this but joined in the hope someone with more experience could provide some advice. In a personal project, I have a particular design dilemma where I am trying to pass a metal ball bearing (or any other spherical shaped solid) from a column of air into a column of water...

Hello guys, Long story short i am a senior mechanical engineering student (graduating next year). But i do not like my major, at first i did not matter to me what i choose or what i study. i did not know what i like and mechanical engineering seemed a good option to me in terms of good job...

For the attempt at a solution view the Excel screenshots (1). A screenshot with all the lengths is provided (2). The 4-linkage system is shown in screenshot (3). The problem is shown in screenshot (4). A screenshot from the whole assembly is also provided to add some insights (5). Thanks...

so far I have found the velocity 1 and 2 by dividing the volume flow rate over the area which I got from pi x dia squared/4 my v1 = 1.01859m/s and v2= 2.82942m/s i have then figured out a pressure for the 15mm pipe which i got an answer of 2.71 bar however i am stuck on the rest of the question...

Hello, I am currently a mechatronics engineering student, I am working on a school project: retrofitting a tensile machine. The goal of the project is to improve the human-machine interface as it is a very old machine, it is a JJ LOYD T20K, my problem is that the machine no longer works(it...

Hello, I am attempting to expand my physical understanding of some engineering principles I’ve learned during my first semester of ChemE. I am making a small plastic car that will be propelled with a weak fan. I am attempting something similar to a ChemE project car. Is there a way I can use a...

Hello all, I have a project in which i need to design a small vehicle which is able to carry 4kg for 10 meters. I have took it up to 5kg as the frame and wheels add up too 1kg. So the total weight will be 5kg. Acceleration isn't a priority, but 0.5 m/s I would be fine with. The wheel have...