Statics Definition and 906 Threads

Homework Statement Homework Equations w=(2/3)x The Attempt at a Solution So integrating w to get V (1/3)x^2 +C Then Sum in the Y-direction should be 9-(2/3)x+18=0 Somebody tell me what in god's name is going on here. It seems like they are ignoring the 18kN force and then plugging in my...

Hello everyone, I'm attempting to come up with a way to calculate the most efficient 7 members truss layout using Scilab. The assignment is to make a highway sign support. It has to be L shaped and the truss system is only for the top horizontal part. Two supports. The sign is hanging at the...

I seek to build a vacuum chamber for shipping radon contamination sensitive samples. The cylinder will have a height of approximately 2 inches, and needs an inner diameter of 10 inches. The plan is to weld stainless steel pipe to a plate on the bottom, and to have a lid bolt on to the pipe with...

Homework Statement W= 3kip/ft. Find the shear force and moment at C. Homework EquationsThe Attempt at a Solution Skipping some initial steps, I found the reactions to be Ax=0 and Ay=9 These are known to be correct. Now, slicing the beam from a to c. I get Ay=9. Now I take 3(1/2)6= 9 from...

Homework Statement Excuse my english, it is not my first language. A bookcase has the weight 1500N and is standing at a horizontal floor. The friction force between the floor and the shelf is 600N. The shelf's height is 1,8mand it is 2m wide. The shelf stands on four feet each 0,01m from the...

Homework Statement Determine the height h to which liquid should be poured into the cup so that it contacts half the surface area on the inside of the cup. Assume that r=11mm and l= 60mm . Neglect the cup's thickness for the calculation.Homework Equations Surface Area = 2πXL where X is the...

Homework Statement Homework EquationsThe Attempt at a Solution Was trying to solve for the horizontal reaction at B. Why is BC a two-force member but not AE?

Homework Statement So this is more of a general question as I'm trying to follow the book's way of solving the problems and it's not working. This is what the book says: Always assume the unknown member forces acting on the joint’s free-body diagram to be in tension ; i.e., the forces “pull”...

Homework Statement The hydraulic crane is used to lift the 1450-lb load. Determine the force in the hydraulic cylinder AB and the force in links AC and AD when the load is held in the position shown.Homework EquationsThe Attempt at a Solution I don't even know...

Member ABC is supported by a pin and bracket at C and by an inextensible cable of length L  7.8 m that is attached at A and B and passes over a frictionless pulley at D. Assuming P  450 N and   35 and neglecting the mass of ABC and the radius of the pulley, simplify the problem as much as...

Me and some friends are doing a project for statics where we compare the designs of different transmission tower designs. I'm looking for a direction to start. Does anyone know why different designs are incorporated for different type of transmission towers. There are three basic kinds of...

Find the result force of the two forces. This problem seemed easy at first, but I think I'm confused as to how to find the coordinate angle (gamma) . For the ( i,j,k) components of F1, I got (300cos(30)i, 0j, 300sin(30)k) I don't understand the function of the 45 degree angle, either. What am...

I have to create a formula where one would just need to input y to get the tension from CD. 1. Homework Statement A worker plans to lift a 60-lb 5 gallon bucket of paint by tying a rope to the scaffold a A and then passing the rope through the bail of the bucket at B and finally over the...

Between Beer and Hibbeler, which is the better book? Are there any other books beside those two that are any good? Are there any books that I can use to complement either of these two to get a more theoretical understanding of are they fine alone? Thanks

The ball of weight W is held in place as shown in the left figure by the inclined surface and the compressed spring. The FBD of the ball is shown in the right figure. Determine the force exerted by the spring on the ball, and the force exerted by the inclined surface on the ball in terms of the...

Homework Statement A water tank, 3.7 m deep and 2 m in diameter, is connected at the bottom to a second water tank by using a 2 cm diameter pipe (see the figure). The tank A is open to the air and tank B is filled to the top and sealed. a) what is the mass of the water in tank A...

Homework Statement The truck is to be towed using two ropes. If the resultant force is to be 910N directed along the positive x axis, determine the magnitudes of force F1 and F2 acting on each rope and the angle θ of F2 so that the magnitude of F2 is a minimum. F1 acts at 20° from the...

Hi, I was thinking about this and hit a "wall". If you have a vertical rod with constant area that is attached to the ceiling from one point its weight will be: [itex]w(x)=ρ*x*g[\itex] (where 0 is the end of the bar) now if you take a differential above x you will have that the...

Hi all, I am looking for some help to my delima. I am taking Statics this semester and I ordered my textbook off of amazon to save a few dollars and my book will not be here until Monday at the earliest. The problem is that the teacher has assigned homework due on Friday. The text that we use...

Homework Statement How close to the edge of the 26.0-kg table shown in the figure (Figure 1) can a 64.0-kg person sit without tipping it over? Homework Equations ∑F = 0 ∑T = 0 The Attempt at a Solution forces A (left leg) and B (right leg) are the forces from the two legs of the table...

I have (what is seems to me) and easy statics problem to solve. I simply need to work out the tension in a single continuous wire connected to the load (with eccentric COG) on two ends - as shown, and passing through a frictionless pulley on top. I know that the tension in the wire must be the...

Homework Statement A tube (both ends open, height h, diameter d) is immersed into water so that length h1 of the tube is above water. Then the top of the tube is covered tightly and the tube is pulled out of the water so that length h2 is above water. The relative humidity of air is \phi and...

Is this correct? http://postimg.org/image/ho7cnjsmt/

Homework Statement In the structure shown, the beam is pinned at point B. Point E is a roller support. The beam is loaded with a distributed load from point A to point B of 400 N/m, a 500 N·m couple at point C, and a vertical 900 N force at point D. If the distributed load and the...

Homework Statement A telescope mirror housing is supported by 6 bars in form of a space truss with geometry defined by the figure below. The total mass is 3000[kg] with center of mass being point G. The distance between: z axis and points A, B and C is 1 [m] z axis and points D, E and F is...

Homework Statement http://i.imgur.com/VFb5rwj.png Homework Equations The Attempt at a Solution First, I drew the FBD for the system, one horizontal force at A, one force perpendicular to the beam at B, and the weight. Writing out the equilibrium equations: The sum of forces in...

Homework Statement http://i.imgur.com/rwbXqW8.png Homework Equations The Attempt at a Solution So I started off by analyzing the pulley, and determined that each cable carries 100N of force. After that, I drew the FBD of the beam, where there is a 100N force going downwards on the...

Thanks for checking out my post- I work at a launch facility, and we have light fixtures around the site that have proven to be poorly designed by the manufacturer. Multiple fixtures joints have failed over time due to lack of proper structural support - My goal is to add sufficient supports...

Statics: If computing the moment of inertia about the y-axis of a triangular shape in the 2nd quadrant(not touching the x-axis); would i still use hb^3 /12

The Problem numbered 2/16 from the Engineering Mechanics Statics 7th edition by Meriam Determine the x- and y-components of the tension T which is applied to point A of the bar OA. Neglect the effects of the small pulley at B. Assume that r and are known.

Homework Statement A gymnast with mass m1 = 46 kg is on a balance beam that sits on (but is not attached to) two supports. The beam has a mass m2 = 118 kg and length L = 5 m. Each support is 1/3 of the way from each end. Initially the gymnast stands at the left end of the beam. What is the...

Homework Statement I attached the question. Homework Equations M = r x F M = F x d Resolving forces, Fx/Fy/Fz = F cos/sin theta (depending on which angle you take) The Attempt at a Solution I can easily find the moment of the 100 N and 120 forces, but I'm having trouble finding...

Homework Statement Determine the minimum horizontal force P required to hold the crate from sliding down the plane. The crate has a mass of 35kg and the coefficient of static friction between the crate and the plane is μs = 0.40 2. The attempt at a solution Fx = P cos 30 - 343.35 sin 30 +...

Homework Statement I have attached the diagram. The question says "Compute the Moment Mo of the 1.2kN force about the axis O-O. Homework Equations M = r x F AB = OB - OA Resolving forces, Fx = F cos Θ.. Fy = F sin Θ etc. The Attempt at a Solution Here are the axes I've made...

consider the image on the drawing at the top (above the yellow arrow) if i had some non-compressible fluid enclosed in a pipe like container that looped back in on itself (as shown in figure), and if the container was non-elastic, when i rotate this container filled with fluid such that...

Homework Statement Attached below Homework Equations I am having a problem because the solutions manual does the parallelogram method and stupid me I cannot draw the parallelogram correctly. Specifically my drawings are off a bit. and it throws me off every time. the last one I had...

Homework Statement Calculation of the forces C and T in the figure http://www.picpaste.com/20140127_171733-lxIN0kJQ.jpg http://www.picpaste.com/20140127_171733-lxIN0kJQ.jpg My problem is that I don't understand how cos and sin is given I know the rules SOHCAHTOA Homework...

can you help me continue this problem. I'm stuck @ joint C. please use joint method. please click the image to fully view it. thanks!

Homework Statement Water stands at a depth D behind the vertical upstream face of a dam. Let W be the width of the dam. Find the resultant horizontal force exerted on the dam by the water. The Attempt at a Solution So I know how to solve the problem, I was just unsure of whether we...

Homework Statement The given force F is equal to 5000N,γ=〖30〗^o and α=〖15〗^o. The moment on member 4 is to be found. The geometry of the structure was worked out separately. Homework Equations To solve the problem I tried to use the Equilibrium equations which state that...

Homework Statement Please refer to the attached diagram. I am trying to find the unknown load F (along line of action lF) that will keep the system in equilibrium as well as compute all reaction forces developed at the joints. Homework Equations Summation of forces in the horizontal and...

Homework Statement Given force F (=5000N), find Moment on member 4. I have attempted to start solving this problem by drawing the following diagram: I added the letter 'A' to the support of member 2, and also put an angle of 7 degrees to the vertical at the support 1. I have...

Hi, I'm currently studying physics in Europe, and am in some kind of "statics" course. It's a little unclear, as the course name is probably loosely translated from German, and the teacher didn't have any English books to recommend. He's a great prof, but our classes are almost...

Good morning everyone. I need some guidance regarding which course to take next semester. For some background, I am active duty Navy with three kids majoring in Mechanical Engineering. Due to my work schedule, I can only take 2 classes per semester (for now). I am already locked into Physics...

Homework Statement Ends A and B of the 5-kg rigid bar are attached by lightweight collars that may slide over the smooth fixed rods shown in the figure. The center of mass of the bar is at its midpoint. The length of the bar is 1.5 m. Determine the horizontal force F applied to...

Homework Statement An opening in a floor is covered by a 1×1.2-m sheet of plywood of mass 18 kg. The sheet is hinged at A and B and is maintained in a position slightly above the floor by a small block C. Determine the vertical component of the reaction (a) at A, (b) at B, (c) at C.Homework...

Homework Statement A 100-kg uniform rectangular plate is supported in the position shown by hinges A and B and by cable DCE that passes over a frictionless hook at C. Assuming that the tension is the same in both parts of the cable, determine (a) the tension in the cable, (b) the reactions at...

Homework Statement Hello and thank you in advance for your help! I am taking an introductory algebra-based physics class and am trying to solve this problem: Suppose an arm holds an 5.8-kg mass. The total mass of the arm is 3.3 kg. Gravity acts from the center of the arm, which is 24 cm away...

My book has some questions involving "short links" connecting trusses to a support. It doesn't seem to explain what short links do. Can anyone shed some light? I attached a picture of what they look like. I really just can't find any information on what they do. Is it supposed to be very obvious?

Homework Statement http://imgur.com/yVOXkAT The two disks each have a mass of 18kg and are attached at their centers by an elastic cord that has a stiffness of k = 1.6kN/m . Determine the stretch of the cord when the system is in equilibrium and the angle θ of the cord. (Figure 1)...