Torque Definition and 1000 Threads

Hi I'm looking for some info and advice. I've looked across the Internet and forums looking at different formulas for working out the torque requirements for a motor but can't find anything that helps me. I have designed a small amusement ride. Please see pic below. The outer ring...

Hi, first time poster. I'm trying to calculate the clutch torque output using the following formula: torque = force (450KG ((pressure plate calculated force) x gyration radius ( 0.09 Metres (( square root of inner radius squared x outer radius squared divided by 2) x coefficient of friction (...

Homework Statement https://web.njit.edu/~gary/111/assets/HW10_SOL.pdf'][/PLAIN] https://web.njit.edu/~gary/111/assets/HW10_SOL.pdf The problem is on page 3 of the document along with relevant solutions. Homework Equations F=ma, and Sigma Torques = (moment of inertia) * angular acceleration...

Homework Statement A 10.0 kg sphere is attached to the incline by a horizontal string. Whats the tension in the string. Homework Equations sum of all horizontal forces = 0 sum of all vertical forces = 0 sum of all torques = 0 The Attempt at a Solution The sum of the horizontal forces[/B] is...

Supose we have a ¨U-shaped" metal bar, stuck in the ground, and I aply a force on the top of the part on the right, trying to make it wider. If I were to avaliate the forces acting on a specific part of the bar that includes the point that I´m applying the force, let`s say the portion from that...

Hi guys, I've been a member for a wile and never really posted anything so here goes. I'm trying to determine the torque requirements to turn an Auger. Radius of the core is 15mm and the outside diameter is 28mm. I've read a lot of literature and thesis regarding this subject and most of what...

In a --specifically uniform electric field-- (I may be wrong here) my understanding is that the dipoles will result in no net dipole force (due to cancelling out) but there will actually be a net torque experienced about the center. This torque will be trying to turn the dipole so the moment, p...

While watching lecture at Coursera, i tumbled over this fourmula Moment \mathbf{M}=\sum_{i=1}^{4}(\mathbf{F}_i\times \mathbf{r}_i+\mathbf{M}_i) where F is uplift force from a propeller, and M is drag moment for a propeller. But why they add drag moment(torque) like that? Maybe it will differ...

Guys, I'm trying to figure some stuff out, but I'm stumped. I need to figure the what my output would be. I'm applying linear force via hydraulic cylinder. The cylinder will turn a "gear" and in turn turn another. The "gear" is not necessarily a gear, it and the hydraulic cylinder will mate...

Whenever we define torque from a frame of reference, is it necessary for the frame to be inertial? Please explain because I am unclear on this.

Hi guys, So I'm building a small electric skateboard, and I'm having trouble understanding how much power I need to keep the board in motion. The total weight of the board is 30Lb and I am about 170Lb. I want to maintain a speed of 15Mph when not kicking my leg. This is to be assumed on a 1...

Homework Statement A meter stick (thus, the length of the stick is exactly 1 meter!) is supported by two supports. Support A is located at the 20-cm mark, and support B is at the 68-cm mark. You can assume that the mass of the meter stick is uniformly distributed along the length of the stick...

Homework Statement Here is my assignment: For this inquiry, you will be using your meter stick, some string, some weights of known mass, and the spring force gauge from your kits. Here's the question to answer: what is the mass of the meter stick? You can't measure the mass directly! That's...

Homework Statement the tube has ID of 450mm, t= 6mm, OD= 462mm, pressure is 1.2MPa This is based on ASTM A36 steel, which have Ultimate Tensile strength 400-550MPa Yield Tensile strength 250Mpa Modululs of Elasticity 200Gpa Shear Modulus 79.3GPa Determine the factor of...

Homework Statement . What is the angular acceleration if a force of 3 N is applied perpendicular to the radius of a 5 kg solid sphere that has a radius of 0.6 meters? Homework Equations = r x F I = mr^2 The Attempt at a Solution I used tried solving for angular acce. 3N/(5kg)(0.6)...

Homework Statement Calculate the net torque about the axle of the wheel shown in https://jigsaw.vitalsource.com/books/9781269392464/content/id/ch08fig39 . Assume that a friction torque of 0.40 m · N opposes the motion. Where F=18N (in photo). The picture is here...

Hi - Can anyone help me out with a question. The answer seems obvious, but maybe so obvious that I'm jumping to wrong conclusions! Just been reading Guy Martin's book "When your dead, your dead" (good read by the way) and one of his stories is about breaking the world speed record for a wall of...

if a central force acts on a sphere it will rotate and move and also a angular momentum is given to that body it will also move in the same manner.What provide torque in first case and net force in second case.is it friction then how?

Homework Statement The bar, of length AB=2m, with a mass of 6.00 kg. There are two weights, let's call them m1 and m2, hanging off the bar. m1 is 4.4kg, at 0.66m from point A. m2 is 2.0 kg, at 1.84m. The bar is suspended by two spring scales defined as F1 and F2 (assuming negligible mass)...

It seems possible to obtain engine torque and RPM from a truck CAN bus. I'd like to estimate tractive force at the wheels given these two values. How should I go about computing torque at the wheels? Wouldn't I need gear ratio, which doesn't seem obtainable from the CAN bus? Do I need to...

So basically, I'm making a vehicle that should regenerate energy from braking. the car will start at rest at a ramp between 30 to 50 degrees slope. a flywheel will be connected to the front wheels of the vehicle I want to determine what kind of a flywheel will be sufficient to store the...

Homework Statement [/B] I've been working my way through the following question but I am a little bit stuck at this part: A gearbox and flywheel are as shown in FIGURE 4. The output shaft rotates in the opposite direction to the input shaft at 5 times its speed. The gearbox has an efficiency...

I have a system that consists of a shaft and two selected gears. I want the shaft to be rotating at 250 RPM and to deliver an input power to the system of 850W. The input torque at the shaft is 71Nm. How can i use this information to determine how large my driving and driven gears will be...

Hey, I am doing a small project on improving the performance of a flywheel in a single cylinder diesel engine. I am stuck at a point where I have to calculate torque on the flywheel. Information that I have is power of the engine is 5bhp, and rpm of the engine is 2600, I do not have any other...

The torque is the cross product with a position vector (that is the lever lenght) and a force But i the is torque also if there isn't a lever? I mean an instantaneus torque that is different in each point we consider it like in the photo It is also a torque even if something doesn't rotate...

The uniform, 120-N board shown in Fig. 5-19 is supported by two ropes as shown. A 0.40-kN weight is suspended one quarter of the way from the left end. Find FT1, FT2, and the angle θ made by the left rope. Thank you for those who will give time and solve this problem. :)

Hi, Struggling with calculating the angle of twist, using TL/GJ. The answer to (b)(i) is 946.1 Nm. Using 0.3 m length section. 946.1 * 0.3 / 75 x 10^9 * 2.047 x 10^-7 = 0.0185 * 180/pi = 1.06 rads Answer is 0.273. Question below (b)(ii):

Homework Statement A rotational axis is directed perpendicular to the plane of a square and is located as shown in the drawing. Two forces, F1 and F2, are applied to diagonally opposite corners, and act along the sides of the square, first as shown in part a and then as shown in part b of the...

Homework Statement A 500-N person stands 2.5 m from a wall against which a horizontal beam is attached. The beam is 6 m long and weighs 200 N (see diagram below). A cable attached to the free end of the beam makes an angle of 45 degrees to the horizontal and is attached to the wall. a) draw a...

Homework Statement Homework Equations Torque=one of the forces x the perpendicular distance moment=force x perpendicular distance The Attempt at a Solution moment of pulling the weight up around the disc: 1.2/2 = 0.6 m 0.6-0.2 = 0.4 m moment= 0.4 x 900 = 360 Nm To lift it, the torque of the...

Homework Statement A "peel" is a flat, long-handled shovel that a pizzaiolo uses to slide pizzas into and out of an oven. If a peel is 1.7m long and has a mass of 2.4kg and is carrying a pizza of mass 1.1kg as shown, what force must the pizzaiolo apply with his forward hand to hold the peel...

My dad and I are having a debate about HP and torque. He thinks that a 400hp diesel with 800ft lbs of torque will have more power and out pull and have better acceleration than a gas engine with 400 hp andf say 300 ftlbs of torque. As I understand it, the relationship between HP and torque is as...

I was going through a worked example in book "Concepts in Thermal Physics" by S.J. Blundell and K.M.Blundell. The example talks about measuring viscosity of a gas between two coaxial cylinders. Homework Statement Two vertical coaxial cylinders. Outer cylinders is rotated by a motor at constant...

is there a way to calculate torque without knowing the power? consider this: P = T * rpm I can calculate rpm easily as I have a tachometer but without power, I can never find the torque. In case of translation, you can find the force propelling an object without knowing the power. For...

Hello guys, I am working on designing a flywheel to couple to a generator however i have a small problem and i have low knowledge in flywheels I have a pinion rotating at w = 14.13 rad/sec and torque Tpinion = F*Rpinion = Mass of inertia *alpha pinion All is known I can find Tpinion euqal...

Hi all =) I am interested to find the forces and torques between two (diametrically magnetized) cylindrical permanent magnets (PMs) placed within a vicinity, as shown below: The NdFeB PMs placed beside one another with a distance, d. Both are rotated by independent external sources (I have...

Hi, is it really needed to use a torque arm for installation of radial hydraulic motor? what if I only used its flange connection to put it in the system? is there any risk?

I have recently purchased this servo motor ,which has rated stall torque of 33 kg cm at 6V. Statical current :16 mA Stall Current: 3+0.6 AOur technical query is,in order to obtain the maximum torque..what current do we need to be able to supply it Is 16 mc sufficient..or we need 3.5A?

hello i have a torque of 100 Nm. how to calculate the shaft size?

Homework Statement A discus thrower ( with arm length of 1.2 m) starts from rest and begins to rotate counterclockwise with a constant angular acceleration of 2.5 [rad/s^2]. What is the magnitude of the total acceleration of the discus when its angular velocity is 9.0[rad/s]? Homework...

Homework Statement Consider a 18 speed bicycle, 3 gears are rotating with the pedal and 6 gears are rotating with rear wheel. Consider that the ones rotating with pedal, have radii 10 cm, 7 cm and 5 cm and the other ones have radii 3 cm, 4 cm, 5 cm, 6 cm, 7 cm and 8 cm. Calculate the torque on...

Hi, If we apply a torque to a spinning wheel such that the torque vector lies in the plane of the wheel, it will precede around the axis perpendicular to the angular momentum and the torque. What happens if the wheel is mounted such that rotation around this axis is absolutely impossible and...

When a motor with a flywheel spins up and then stops, what is the force translated on the surface onto which the motor is connected? I'm assuming the value of this force equals to the centripetal force in the flywheel, but I'm not sure. The setup: http://imgur.com/IiOrRoQ How does the force...

Hi all, I have a constant torque spring that rotates the drive wheel of a Geneva mechanism. I am facing the following problem. I would like a very slow rotation of the drive wheel whenever the drive wheel is not driving the Geneva wheel of the Geneva mechanism (which is 270 degrees of a...

I am in introductory physics, and have just been introduced to the topic of toque. For forces in translational motion, I know that we idealize objects to be point particles. However, when it comes to torque, we don't deal with point particles, but with "lever arms." I guess essentially my...

Attempting to determine the torque on the shaft of a pump. Known values are flow rate, RPM, and shaft diameter. 1. What other values are needed to make the calculation? 2. What is the equation I can use for this?

can i know how much torque is required to move a 200kg weighed vehicle to 30kmph by using 24v, 250w dcmotor

Homework Statement The first theory shows a spring under an axial load where the Torque is given as WRcos(a) The second theory shows a spring under axial Torque. T is given as Wsin(a) Homework Equations Given in links The Attempt at a Solution A torque T would be at full strength along...

I am building a remote controlled toy vehicle, tricycle style powered by a single wheel. Weight is 150lbs drive tire is 24in dia when calculating torque needed and HP So far I have got acceleration as 7.04 ft/sec that times mass of 150lbs should give me torque, at 2112 ft lbs that times rpm of...

My question arises from trying to get the correct sign convention for a pulley that has two boxes attached by a massless rope. one box is to the left of the pulley and the other box is hanging down below the pulley. If I take the counter clockwise direction to be negative, and set up my...