Torque Definition and 1000 Threads

I know that to prove the total coriolis torque from the coriolis torque on a point mass is to express dm as a function of ##d\theta## and integrate from 0 to ##2\pi## and then the x component disappears due to orthogonality of sine and cosine. But i am stuck at other parts.

Hi there, attached were the results: https://prnt.sc/v3yg1f Both are negative and need to be added together to get the torque force. Calculations are from a model of specified radius and input air speed, its a turbine. Just need help in understanding what the negative results mean and how they...

Torque on driver T = 2300N x .2m = 460Nm Torque on drum T=2300N x .6m T = 1380Nm Not sure how to calculate friction force on these...Do we have to assume a contact angle of 180 degrees if nothing is given or is that even required? Not sure what a free body diagram would look like for this.

I have attempted and got 2 different solution 1: 2:

So this is a silly problem that I ran into at work which made me realize that I have all but forgotten Newton's laws of motion after years of working with just hardware and software. I am in the middle of programming a robot for an industrial application and I realized that I have no clue how...

Hi guys! I do have a problem in ansys maxwell simulation of a generator. The moving torque (which represents electromagnetic torque) fluctuates around zero which is not correct. Induced Voltages are ok. How can I fix this problem?

This is the explanation in the section of DC motor Based on the above explanation i have drawn the torque curve. Can you please confirm if it is correct? In the initial position the torque is maximum and when it reaches the diagram 2 the torque is 0 and then it is maximum.

Hi, I have to measure the HP of a small engine at the crankshaft. The only usable things are. A dinamometer A brake disk An rpm meter The brake caliper is floating so when we apply de load it pull the dinamometer. The rpm meter show the revolution during the load apply. It can works? How I...

t is Torque I is the inertia moment P is the power c is the constant light speed r is the spot distance to the fiber p is the torsional constant theta is what we want In the equilibrium $$t = 0$$ $$ F\Delta T = \frac{E}{c} = \frac{P\Delta T}{c} => *F* = \frac{P}{c} (1) $$ This will be the...

Okay, i know that as a ball collides with a pivoting rod on an axis, the ball has angular momentum. Therefore after the collision, the ball is stopped or slowed, and the rod swings. The ball provides a force and torque to the rod. But if I isolate the ball, isn't the only thing acting on the...

G'day. I have a problem with my statics work, i understand its probably quite simple but I am having trouble in my understanding. Essentially problems make more sense to me by using the component method, although in saying that i understand this problem would be quite a lot more simple were i to...

Hi, I was just working through this gearbox problem and the answer key has different results to mine. I thought that I should show my working to see where the error is on their part or mine? This is the gear box (for reference, ## N_s = 32 ##, ## N_p = 16 ##, and ## N_r = 64 ##) My attempt...

I'm unsure what equation to use to achieve this. My solution was to draw a scale model and measure the distance offset from the bar and how relative that was to the same length bar bent to 90 degrees. My answer was 70.8% assuming a linear relationship between length of lever and force (is that...

HI τ= r ˆr x - ##k / r ^ 2## ˆr= 0 right? since ˆr x ˆr is zero What about L?

Disclaimer: The solution to this question has already been posted by my instructor. I made this post to understand why my solution is wrong or if the instructor is wrong, since their explanation does not make sense to me. My reasoning: Using the fact that the magnetic torque on a...

I am confused with the concept of Torque handled differently in books, Concept1: If a loop is placed in a magnetic field and the current flowing in the loop is ##I## there will be force and torque acting on the loop given by ##F = I \vec l \times \vec B ##. The torque is given by ##\tau =\vec...

##\vec \tau = \vec \mu \times \vec B -eq1## ## F = I \vec l \times \vec B -eq2 ## The forces i have indicated The magnetic moment is coming out of the page. I am only attempting only the part (a) as of now a. The force calculations are F1 = 1.4*0.22*1.5 = 0.462 +X direction F2 = 1.4*0.22*1.5...

Summary:: A bowling ball is thrown on a bowling lane with the coefficient of friction ##\mu## with an initial velocity of ##v_0## and no rotation. After hitting the ground, it starts rolling with slipping. After how much time after hitting the lane will the ball stop slipping? What will be its...

I watched a video that showed how to calculate the center of gravity of a horizontal bar suspended from two wires, one attached to each end. Each wire was then attached to a vertical wall. The angle each wire made with the wall it was attached to was given. They treated it as an a example of...

*Comparation of diesel vs petrol engine with equal power *Why all heavy duty-long last engines are low RPM? *Is low RPM main reason why diesel last longer then petrol engines?If does,why high RPM engines "kill" engine faster? *What are pros/cons for diesel and petrol in term of durability?

Hello, https://www.fxsolver.com/solve/ I am using this calculator to figure out how large/heavy a flywheel I need to produce torque of 200kg, or that could resist a force of 200kg applied to it. I am not proficient in mathematics, so my terms or what I'm asking might be not phrases correctly...

I saw that the solution states that the torque about the center of mass is zero, since the man does not rotate about its center of mass. However, I then thought about taking the torque about the left foot (so the right foot for the man's POV). Hence: $$\tau_{left} = \tau_{0} + \textbf{R}\times...

What does right hand rule torque mean in real life? engine crankshaft produce torque,if apply right hand rule to crankshat that will mean that torque is act in crankshaft axiis of roatation,which mean axials berings will have huge load on it,,that is not the case in reality,axail bering don't...

When we talk about for ex. a driver rotates a pump, we say "a torque is transmitted to the pump". What does exactly this mean "Transmitting torque"? and why we said Transmitting torque and not transmitting power for ex.?

I was trying to do some research to find the difference in power of different vehicles. Mainly the difference between a Large hauling semi truck A battle tank and a bulldozer like a d11t. Let's say I hooked up a chain to the back of each of these vehicles and rapped it around a large 3 foot...

Hello PF, I am building a traction assembly for a self balancing bot project and I am having some conflict with my intuition and practical testing results. The setup consists of a motor mounted to a chassis, the shaft coupled to a wheel that rests on a surface with non-zero friction. Below...

So this is for my car. If I have a bolt that I don't know what the ideal torque is supposed to be because the manufacturer of the car doesn't publish a torque, it's possible to calculate it? This can be done just give the specification of the bolt? Regardless of what the bolt is fastening? I'm...

Hello, I am building a dual-axis solar tracker for educational purposes and I need to determine the required torque to move the solar panel in both the azimuth and elevation directions in order to determine what size motors to use. I have attached a simple sketch illustrating the mechanical...

1 axle. 2 gears on the same axle fixed in place. Does the larger gear with 48 teeth have the same amount of (force/strength) as the smaller gear of 12 teeth. IE: if I attached a chain to the 12 tooth gear and it could lift a max load of 10 kg, would the 48 tooth gear be able to lift 10 kg as...

Vehicle Mass : 3 tonnes Manufacturer's instruction is to test vehicle's parking brake effectiveness is to engage parking brake on 30.96 degrees slope. If it holds, it is effective. I do not have 30.96 degrees slope & I want to replicate the same test on flat ground. I was thinking of...

1. When calculating a car's acceleration, is it ok to substitute Torque into a= F/ma= F/m T= FrF= T/rwhere a= acceleration, F= force, m= mass, T= Torque, r= radius,a= T/rm ?

I want to say [the bodies is under gravity field]: There cannot be torque alonge AB "since it is pivoted" There cannot be torque alonge AB "since it is pivoted" i think i am missing something.

The formula for moment of inertia is: I=mr^2 A common derivation for this is: 1. F=ma 2. τ=rma 3. τ=rmrα = r^2 mα This is a rotational version of Newton’s second law, where torque replaces force, moment of inertia replaces mass, and angular acceleration replaces tangential acceleration...

This is how I understand the torque (T1) created at the axis of rotation due to the spring would be calculated. This is considering the spring is starting from a fully extended state and is not already compressed. This is considering that (A) has a distance of 2 in. and the force from the spring...

So I tried using force balancing. I have attached files of my solution in my notebook Torque balancing about O which gives me equation 1 And I used property of triangle, for equation 2 But i can't seem to get the right answer Also, I was wondering if it could be done by concept of virtual work.

Hope someone can help!

Here's a diagram of the problem. There are 3 possible solutions: 163 in-lb clockwise, 163 in-lb counterclockwise, 82.7 clockwise or none of them. After attempting the problem the closest I got to was 82.7 but that was wrong so I'm still stuck.

Below, I have a joint system that consists of a fixed anchor and a moving arm: What I want is simple: To attach a linear actuator on the moving arm in such a way that the mechanical advantage of the actuator is exactly 1 (Ie the actuator only has to generate exactly the amount of force as the...

Can anyone please tell me why the torque on a circular current loop can be calculated by the equation below? In other words, what is the intuition for the formula? Thank you. (I modified my question to a particular case) $$ \vec{\tau} = I \vec{A} \times \vec{B} $$

Hi, it's probably a frequent question, but I can't seem to wrap my hear around. I'm trying to understand how I reach that value, not just how to get the value. I'm designing a vehicle with 4 wheels. It'll climb a surface with a slope theta (in degrees). This is the FBD that I've come up with of...

We have a rod ##AB## of mass ##m##, a force (perpendicular to AB) is applied at ##A##. I want to know how much force will ##B## going to feel? When ##F_1## is applied at ##A## rod will rotate about its COM (which lies at the Center) and hence the point ##B## will also move (a little downwards...

If I have a motor that is turning a shaft with only a small torque required but the shaft is also being forced into the motor, axially at a large force, what is the effect on the motor here? If Faxial is large, does this effect T and how does this effect the motor?

Hi I am confused in this question. What Can I do after the steps in second photo?

Well I am pretty sure that the kinetic energy stays the same because in this case the velocity vector and energy make a ninety degree angle so no work is done, but I am lost about angular momentum. It could decrease maybe if the torque is clockwise while the ship is going in a counterclockwise...

Hello everyone. I'm working on 3D animation about da Vinci tank and why it doesn't work. Please help me find out how to compute: 1: how many men need to move this machine 2: what power on wheel can produce different number of man, like 1, 2, 4, 8.. vehicle mass = 8t men strength = 60kg lever...

It is pretty well known among electrical machines folk that large, salient pole electrical machines start typically with the field winding shorted and starting torque developed by current induced in the damper windings, acting much like a squirrel cage induction machine. The net machine torque...

Hello!, First post and I am excited. I am an artist and want to see if the motor I have selected for this mechanism will work for a project I am working on. I am trying to see if the gearbox/motor I have sourced for this mechanism is powerful enough to drive it. The weight of the object I...

Hello guys, I'm trying to calculate the torque for a 3 wheeler electric (small vehicle). 2 driving wheels and one driven wheel. At the driving wheels we have a BLDC motor for each wheel. We want to calculate the torque for resting( not going down hill) on inclined plane (angle={5,10,15...

Hello everyone, I see videos showing the output torque can be increased by using gears and this is usually demonstrated with DC motors (simple DC motors can be removed from toys). I understand the general logic: * The DC rotates in a high speed. * The gear system reduces the output speed. * If...

So this was a section taken out from a question which I am trying to do shown below I have drawn a sketch to help me visualise of what is going on I have used Fleming's left hand rule to help me determine what direction the force is facing on each side of the coil. For the last part in...