Load Definition and 1000 Threads

I've done part a) and b) but I have no idea where to even begin with part c) on figuring out the loading on the idler!

Homework Statement Determine allowable load on steel tube L= 14 in A= 11 in ^2 Es= 30 x10^6 θ=24,000 psi δ= .008 Homework Equations δ=PL/EA θ=P/A The Attempt at a Solution .008=P(14 in)/(30 x 10^6)(11 in)^2 P=188571.4 lb θ=P/A 24,000 psi=P/11 in^2 P=264,000...

I am attempting to determine a method for calculating the final pressure in a deformable bladder given a starting pressure and an applied load. Scenario: This is actual data gathered in my lab: A) You have a ball made from a rubbery material with P1=3psi. You weigh 150lbs and step on...

The energy stored on a charged capacitor is 0.5*Q*V or 0.5*C*V2 BUT what is the electrical work done by the supply as it transfers the charge to the capacitor? I have heard two answers: W=QV and W=0.5*QV the first answer implies, i think, that energy is required to move charges against...

Hello I'm tasked to evaluate the roof of a small power station situated beneath a rather high tower in an alpine landscape, by means of FEA. One requirement is that the roof shall endure chunks of ice falling on it. Problem is, I am stumped as how to find the loads. The Eurocode norms I am...

Homework Statement Calculate the load on each member Homework Equations \sum \tau=0 -because it isn't rotating. \sum F =0 - because it isn't moving. \tau = Fd\sin \theta - to take the torque at any point The Attempt at a Solution I can calculate the torques at each point. I...

Hey does anyone know much about Google ads? There's a site that I loooove but it takes ~30s to load. This seems outrageously excessive. It makes me suspect that something's not optimized as well as it could be. I've talked the owner but he's not really knowledgeable about the technicalities...

Hello, I am an Electrical Engineering Technologist student and we have a design project that i am trying to understand. We are feeding apartment units with 82A of 120V and 68A of 208V. I am going to feed each with two phase lines and a neutral. What I am not sure about is if the 68A of...

Why is it easier to push a load on a wooden crate on wheels when you are nearer the load and the lever is shorter and at a sharp angle compared to pushing a load with the lever lengthened and at a more relaxed angle with your body further away?

A person with mass 55kg walks at a constant speed up a set of stairs with 20 steps, each 20 cm high. I have to find the work load. Formula: W=FxD where F is force and D is displacement. The book says my answer should be 2.2x10^3. OR 2,200 Joules. I really don't know how to do...

How can I double the voltage through a 3 ohm load with a voltage doubler when the output voltage usually collapses due to low load resistances. I have a feeling it is due to capacitance values and frequency. Can someone please explain.

Homework Statement A 12V battery has an internal resistance of 6Ω. a) If this battery is connected to a 10Ω load, calculate the power dissipated by the load. b) Draw a graph showing how the terminal voltage of the battery and the current it can supply vary with load. c) Derive a value...

Help finding the load impedance of a transmission line? How do you find the load impedance of a transmission line?

Please redirect if this post is not in the right place. I want to install a jib crane in my shop. Vertical upright is planned to be a 5" H-beam in concrete, with 12' above ground, 4' into rock below grade level. Horizontal beam will be same, 10' long. (See attached figure) Am trying...

I'm hoping someone can help me. I have only a rudimentary knowledge of physics, but have strong scientific instincts, as well as a background in science, but not physics. Our rowing team recently has engaged in a debate about the distribution of a load while carrying a heavy rowing scull...

Hello, I have been given a project in which I have to design a ramp powered by a motor and gear-train. For the actual "deck" which the vehicles will roll on I have selected two 5mm Al 6061 T6 plates which are bolted together. The bottom plate will have 4 cut-outs taken from it and act as a...

I am done with all my core classes and only need the PE classes. What would be a good course load per semester?

I'm going to be a first year grad student in the Fall. What is a typical course load in grad school? I will be leading recitation for 2 hours a week, plus 2-3 hours of "office" hours. I know most people take 12-15 or so hours during underdrad, but this seems like too many for grad school. I was...

I am a 3rd year civil engineering student and this is the first time i come across this problem and i am struggling with it. My problem here is that i don't know how to draw a shear force and bending moment diagram for a trapezoidal load on a beam with fixed supports at both ends. I know...

Homework Statement I have a bumper and I am trying to determine whether or not the rectangular tubing I am using to build it is strong enough to withstand a given load (rear end collision). The horizontal member is 4x3x.1875 tubing (4" base, 3" high, 95" long). Two 3x3x.1975 tubes are used as...

I have modeled a curved surface to which I need to applied forces defined in a Excel csv sheet. I have successfully created an external data box in the project schematic and tried to import the load into mechanical. The load file I have resembles: X Y Load 0.3...

I am planning on building an above ground storm shelter that will be 16' x 16' by 8'. The footers will be 24" W by 12" D with 4-#4 rebar. Insulated Concrete Forms (ICFs) will be used for the walls then a 5" floor slab. Concrete space of the ICFs is 6.5" or 8" or 10" defending on someones...

Homework Statement Consider a mechanical car jack. To change a wheel it may need to lift a load of 2000N. Suppose that one rotation of the screw raises the car by 10mm. You apply a force to the end of the lever, 0.5m long, through a full circle. The jack is only 40% efficient. Calculate the...

After going through the chapter of Alternator (i.e Synchronous Generator) I have come to know that if the steam input to the turbine which is coupled to the rotor shaft of the alternator is increased the load angle will increase.. but what is the reason behind this ? I want to know both...

hi, this is not a question from Hw its pure interest. 1.lets say i have an electric motor with a shaft radius r lengh L, and at its end there is a metal disk with radius R and thickness b. if the motor supplies torque τ what would be the momentum on the disk? i was thinking that i the motor...

I could rephrase the same question, why does the frequency decrease when load exceeds generation? I know these are fundamental operating characteristics of a power system network but I'm not sure I can mathematically prove it. My best guess is that everything dissipates more power when the...

I want to build a crane to load my handicap scooter on my pickup. In my design I need a 36 inch beam, fastened at one end, free at the other. The beam will be loaded at the free end with 150 pounds of static weight, and it will also have a maximum moment of 500 foot-pounds tortion at the free...

Homework Statement The object is a crane arrangement of pipes that falls forward without any loads or counterweights on it. We can take it apart measure the weight and the length of the individual pieces.How much weight can a tower crane lift without tipping? I just need a general way to...

Homework Statement The following results were obtained when a spring was stretched: Load/N: 1.0 3.0 4.5 6.0 7.5 Length of spring/cm:12.0 15.5 19.0 22.0 25.0 A) use the results to plot a graph of length of spring against load. b) use the graph to find the: i)...

Hey everyone Homework Statement Im trying to calculate the force encountered by an object falling due to gravity that is caught by a rope. Obviously F=ma and since mass is constant I need to find the rate of deceleration. I've tried to using the equation v^2 = u^2 +2ax as v = 0 and u...

Homework Statement I understand power factor is defined as (average power)/(apparent power) or cos(theta v - theta i) where theta v = load voltage and theta i = load current. Also the power factor angle is equal to the load impedance. I don't understand how the 2 definitions of power...

I have a heater coil (purely resistive) of resistance say R. If I hook this resistance to the mains, I get power of V_source_rms ^2 / R. I don't want that much power. So, I use some power electronics switching device, and hence reduce the effective V_load_rms to a lower value. So, my new...

how to find power factor of the load, the three voltmeter readings are V1=220v,V2=122v,V3=136v

Homework Statement A bridge is idealized as a simply supported beam AB of length L, as shown in Figure 2. A four-wheeled vehicle of weightW now drives across the bridge. Sketch the shear force diagram for the case illustrated, where the rear wheel is a distance a from the left support...

Hi I am trying to work out the load applied to some anchors used to hold a car stationary in a man made river channel. I know it will be something to do with the surface area and the speed/volume of water. Can anyone help, admittedly I am a practical person not a acaedamic so layman terms...

Good day everyone. I have built a car port post in an inverted L shape and want to calculate the load that it can support. I think I have “over-killed” the posts enough. I am curious to see how much weight this structure could hold. Any way of calculating the load at the area which...

hello everyone, now i in practical in some company and they want me to design ladder and calculate the load that the ladder can support. the ladder is use to connected between barge and jetty. the ladder also has handrail as stiffness and it work in 45deg. dimension for ladder length...

Please help, i can't answer part B, but think i am using the right equation! Thanks A student is designing a suspension pull rod for a car. The rod consists of a central tube section that has a wall thickness of 1.0 mm. The following tube diameters are available: 10mm, 8 mm and 6 mm and the...

I may be doing it correctly, but the number seems way to small for the initial calculation. Plus I am really not sure how to factor in those other forces. Modulus of elasticity E = 114 GPa (if unclear) thanks ps. answer is 0.804 mm

Hi there! I have here a CAT Standby 650 ekW 813 kVA 60 Hz 1800 rpm 480 Volts generator with CAT 3412C TA Diesel Engine. Im trying to come up with maximum apm load which can be connected to this generator. What formula should I use for that? simple one W=V*A, where A=W/V good enought? Or...

Hello, i need information who know or advise where i can to find literature, how to caltucalate this. 1. I need information how to caltucalte load (snow, wind and other forces) which can keep this roof, and 2. how to choose dampers which keef roof. Maybe anyone know how to calculate this...

Hello, I have a real world sports question I need help with: I am looking for an accurate formula to calculate the load of Slackline equipment (will explain shortly), based on: - The length of the line - The sag of the line - The weight on the line Slacklining is like tight rope...

Homework Statement A system of two springs is considered, with spring constants k1 and k2, arranged in parallel and attached to a massless rigid bar. The bar remains horizontal when no force on it is zero. Determine the equivalent spring constant (ke) that relates the force applied a distance...

Homework Statement Several beams of 533 x 210 x 92 kg/m UB section in grade 5275 steel are used to support a composite floor slab. Each beam is simply supported with an effective span of L=6.50 m. (a) During construction, before the floor slab is cast, a temporary concentrated load P kN...

I'm making a rc cart with 4 wheels with rubber tracks on them. Two front wheels are powered by two dc motors 3.5-15[Nm] torque. Torque of 15[Nm] represent stalled torque. Let's say that friction between wheel axel and body of cart is minimal. Diamter of axle is 10[mm] and the diameter of wheel...

Hello, I've been toying with the idea of making a cheap dynomometer for small electric motors, but one of the obstacles I'm encountering is finding a cheap load cell. The best I've done so far is a $75 sensor from Omega, which still requires conditioning. Then it occurred to me that you can...

In the context of power systems, what does it mean for a load to be unbalanced? Or for that matter, balanced?

Please help with this query to find how much load a dumper truck can lift without it becoming unstable and toppling. Homework Statement A lorry has a volume of 42 cubic metres and can hold 78,000kg sand. The overall length of the vehicle is 9.5m with a pivot 1.2m from an end. The bed...

Hi... Me too new to this concept. I too want to load a .m file by pressing the button in the GUI. I am the beginner to matlab. I have added 3 buttons to my gui and if i click on the first button means then i want the .m file stored in the same directory be loaded and automatically that .m...

Hello all, I have a problem in ANSYS workbench. I have modeled a curved hollow cylinder and I have divided the top face(ring shaped) into various sections as shown in the attachment picture. I am applying surface loads on those sections/surfaces. Is there a way that I can make the load move...