Statics Definition and 888 Threads

Homework Statement For the attached problem, I'm asked to solve for X Homework Equations Sum Fx = 0 Sum Fy = 0 Sum M = 0 The Attempt at a Solution Sum Fx = 0 = No forces in x Sum Fy = 0 = F1 + F2 - F3 = 0 Sum M = 0= (F1)(X) - (F2)(L-X)

Homework Statement I am in my second year of mechanical engineering. This is a statics problem i would like help starting http://img230.imageshack.us/img230/9501/hw1z.jpg Homework Equations The Attempt at a Solution I know I need to calculate the force time distance but...

I have a diagram below for the problem...what I am trying to understand is when the moments are found about point A as they are in the solution...the 800N force downward is considered positive and the Cy reaction is considered negative...and the Cx is considered positive... What confuses me...

The problem statement: My relevant equation: \phi will be the angle between the X axis and F_{CO} \theta = \phi + \arcsin\left(\frac{3}{5}\right) My attempt at a solution: \Sigma F_{x} = 0: F_{CO}\cos\phi - F_{BO}\frac{4}{5} = 0 F_{CO} = \frac{F_{BO}\frac{4}{5}}{\cos\phi} \Sigma F_{y} =...

http://img10.imageshack.us/img10/8880/capturejfu.jpg I did arctan(12/5) to get the degrees + 180 to get the angle from the X axis to B, then I just split the angles into components. I did 100*cos(246) + 100*cos(theta) = 0, and I got 67 degrees. Then I was doing the Y components, and realized...

Homework Statement It is known that a force with a moment of 960N*m about D is required to straighten the fence post CD. If d=2.8 (already replaced), determiethe tension that must be developed in the able of winch puller A o create the reuired moment point D. Homework Equations W=Fd...

STATICS PROBLEM! Need urgent help! Hi boys(and girls), I got stuck at a few questions of statics, and since I have to send the correct answers TONIGHT... I tried them all, but some answers I just don't know... Please help me with the following problems, which are displayed in the...

Okay, i posted a picture of the problem above, sorry if blurry, do not have scanner. i will retype problem, The mass of block A is 250 kg. Block A is supported by a small wheel that is free to roll on the continuous cable between supports B and C the length of the cable is 42 m. Determine the...

Homework Statement Here is a horrible diagram representing the problem: The problem is to find the minimum coefficient of static friction between the ball and the wall so that the ball remains motionless. Homework Equations torque = r*F The Attempt at a Solution I've divided the tension...

I need help on the first problem of this worksheet. I cannot figure out what I should include in the moment equation (M=Fd) advice would be greatly appreciated. https://moodle.uncc.edu/file.php/19847/Section_002/assn4_002.pdf

Homework Statement The uniform work platform, which has a mass per unit length of 28kg/m, is simply supported by cross rods A and B the 90-kg construction worker starts from point B and walks to the right. At what location S will the combined moment of the weights of the man and platform...

Homework Statement My question is about the method used for calculation. The problem reads: There is a steel pipe of uniform size and density at a length of 31 ft. It's weight is 81 lbs. It is hung from a concrete deck with five concrete hangers. Measuring from one end of the pipe, the...

Homework Statement Two cables are used to secure the overhang boom in position and support the 1500N load. If the resultant force is directed along the boom from point A towards O, determine the magnitude of F_C(FsubC), F_B, and the resultant force, F_R. Set x= 1 and z= 4 . Homework...

Hi everyone, I’m not 100 percent sure if this is the right section for this question but I guess I will find out very soon. I have come across some new material as part of my undergraduate engineering course relating to engineering mechanics, in particular truss analysis using the method...

Case closed. :) Well, I've got quite a few questions I couldn't solve. I'd love to be pointed in the right direction, because there are some problems I just don't know how to approach at all. This is just the first batch, I'll be adding a couple more in a while. I've attached a link to...

So I'm totally stumped on how to start this problem. Anyone want to give me some clues. Thanks, Homework Statement Find V,F, & M at points P and Q. Show direction. Answer: 13.3, 750, 1000, 290, 877, 700 Homework Equations This is problem #3 on the attached document. The...

Homework Statement At ground level in Colorado Springs, Colorado, the atmospheric pressure and temperature are 83.2 kPa and 25 C. Calculate the pressure on Pike’s Peak at an elevation of 2690 m above the city assuming an adiabatic atmosphere. Known Patm = 83200 Pa T0 = 25° C z-z0 = 2690 m...

Homework Statement Homework Equations Nil The Attempt at a Solution Why does the bar y have a factor of 0.5 for the forumla of area centroid? Thank you very much!

Homework Statement Homework Equations F = uR The Attempt at a Solution I don't understand the followings: For equilibrium at A, the equation should be F1 = T sin \theta. Am I right? While for the one at B, the equation should be F2 = T sin \theta. Am I right? In...

Homework Statement A solid sphere and a hollow sphere of same radius and same material are dropped from the top of a beaker filled with water. The height of water in the beaker is 'H'. Which sphere will reach the bottom of the beaker earlier and why? (Neglect any viscous force)

Homework Statement http://img512.imageshack.us/img512/2617/staticsquestion4.jpg Homework Equations - Ability to resolve forces into components - M = Fd The Attempt at a Solution (a) Resolve the force acting at an angle into components... 10kN force = -10cos50i - 10 sin 50 j...

Homework Statement http://home.exetel.com.au/peleus/EIDEprob.jpg 2. The attempt at a solution Basically did the standard sum of moments around point A to try and get the vertical component of point D. -6.2*997 + 9.2*Dy - 12.4*1472 Dy = 2655.89 From there working out Dx...

Homework Statement The tension in the tow rope pulling the car in Newtons is 2 500N. Determine the minimum length of the rope l, between A and B, so that the tension in either AB or AC does not exceed the tension of 3 200 N. Homework Equations Fy = 0 Fx = 0 The Attempt at...

Homework Statement A man, of m = 70 kg, walks along a thin rigid plank, of M = 210 kg. The plank sits on the roof of a 10 story building and is placed so that its center of mass sits directly on the edge of the roof. Where, along the plank, can the man move before the plank tips over the...

Homework Statement QUESTION 3 Assume that the pulley at A is a small frictionless pulley. The cord AB, and the cord supporting the block are made from the same cord. Determine the maximum weight rounded down to the nearest Newton of the block that can be suspended in the position shown if...

Homework Statement http://i42.tinypic.com/b4jp6c.jpg Homework Equations \sumFx=0 \sumFy = 0 \sumMa=0 The Attempt at a Solution I stuck don't kno what to do

Any assistance given is greatly appreciated. Thanks in advance. http://img3.imageshack.us/img3/5519/hw3statics.jpg Thanks again.

Homework Statement see attachement Homework Equations sum of Fx=0 sum of Fy=0 sum of M=0 The Attempt at a Solution There are 4 forces that I have found. 12W acting in the negative y direction at A. 3W acting in the negative direction acting 2 feet from pt B. A F acting in the...

Homework Statement I got a problem solving this question. http://img228.imageshack.us/img228/7049/image164.jpg The Attempt at a Solution Im not sure if I am missing a rule here. I take CW to be positive and CCW to be negative. But my attempt to solve it failed =[...

Homework Statement Ok, Let's see, this problem consists of two (2) cars with a cable of unknown tension between them. The first car has a weight of 2100Kg and is at an angle of 10 degrees from the normal. The second car weighs 1360Kg and is at an angle of 26 degrees from the normal...

Homework Statement #16Homework Equations F=kx and sum of all the vertical and horizontal forces each has to = 0The Attempt at a Solution Because each end of the spring is like a pin it has an opposing force of 175/2 N on each end to balance out the 175N being pulled in the middle. So I took at...

Homework Statement Two forces P and Q with respective magnitudes 100N and 200N are applied to the upper corner of a crate. The sum of the two forces is to the right (+x direction) with a magnitude of 250N. Find the angles that P and Q make with their sum - that is, with the horizontal line...

Homework Statement How do i know how to calculate it properly ? Like i Know M=Fd but, how can i tell if its positve counterclockwise or negative clockwise. Expecially when you have components. Something Like this that's broken into compoents how can i calculate the moment ? I am totally...

Ok, I've come across this problem in fluid statics, but seem to be getting the integration wrong: "A semicircular plane is submerged vertically in a homogeneous liquid with its diameter d at the free surface. At what depth s is the centre of pressure?" The answer should be s = (3*pi*d)...

Problem Statement A steel shaft 120 mm in diameter is supported in flexible bearings at its ends. Two pulleys, each 500 mm in diameter, are keyed to the shaft. The pulleys carry belts that produce the forces shown. Determine the internal forces on a vertical section through point A. I've...

This is just an entry level problem from the second day of class. It isn't really dealing with statics but with just vector manipulations. I have included a copy of the problem and a partial attempt. Any help would be appreciated.

Homework Statement Determine The Centroid of The Area Homework Equations x_centroid = [(Area of each piece)(Centroid of each piece)]/(Area of each piece) The Attempt at a Solution This seems like a really basic problem, I am just reviewing for my statics final on saturday. The only problem...

Homework Statement Includes picture, download question http://docs.google.com/Doc?id=ajccwmhrc3rx_37gs2ht7g9" .Homework Equations The potential energy equation ends up being V = 1/2 k x^2 + W yThe Attempt at a Solution xspring = 2 sin(\Theta) ym = 2 cos(\Theta) V = 1/2*40 (2 * sin(\Theta))^2 +...

HELP!Statics problem Homework Statement A thin rod AB of length L=0.5m and mass m=1.0kg makes an angle of theta=60 degree with the horizontal. It is held in position by a horizontal light string attached at A as shown. A mass M is suspended from A by a second string. If the coefficient of...

Homework Statement Using a uniform strut, a rigid brace hinged at the floor, a person holds a 30-kg engine in equilibrium while it is being repaired. The strut has a mass of 12.5 kg. A smooth rope passes over a pulley at the end of the strut. (a) What is the force exerted on the rope by...

Homework Statement Image of problem: http://img227.imageshack.us/my.php?image=physics3ue4.png A 1229.0 N uniform broom of length L is supported by a cable. The broom is pivoted at the bottom, the cable is attached a distance (3/4)L from the pivot, and a 2442.0 N weight hangs from the brooms...

Hello guyz,i'm facing this problem in my statics class...and thought posting it here so i can get some help :) here it goes http://img372.imageshack.us/img372/6241/58856343aw8.jpg Ok this is what i did and I'm kinda stuck... just bare with me...

Homework Statement Diagram is attached. The mast OA is supported by 3 cables. If cable AB is subjected to a tension of 500N, determine the tension in cables AC and AD and the vertical force F which the mast exerts along its axis on the collar at A. a = 6m b = 3m c = 6m d = 3m e = 2m f = 1.5m...

1. What horizontal force F will pull the 100 kg lawn roller over the step? What is the value of F if it is directed normal to AC? I can't draw a picture for you, but i can describe it. There is a circular lawn roller in contact with a step that is 3cm in height. The roller is currently...

Homework Statement hey, I'm having issues with a problem, and my book doesn't seem to show me how to do it. so, i have a curve x = ky^2 and I'm to rotate it about the x-axis. I need to find the surface area generated. How do i use the first theorem to do this? Thanks for the help sorry...

Just figured I'd throw this up here. I was able to solve for the reaction at E when a=2 but when I tried for a=7.5, I wound up with something completely different. I was wondering what I'm not incorporating into the steps to solving this. Also, it says determine the reactions at A and E. The...

Diagram attached. The spring is unstretched when theta = 0. Determine the theta for equilibrium. I'm not quite sure how to get started here. My prof said that we cannot assume that the tension in the 400 N force cable at A is equal to the tension at the spring close to fixed support C...

Diagram is attached. P = forces M = free-moving moment C = looks like a pin connection L = distance between A and C, and C and B With the system in equilibrium. Question: Write the moment equations about point A, B and C and prove that they are all the same. so basically I end up...

I have been having trouble with this seemingly easy problem. You would think that it is just as simple as finding Fcos(tan-1(3/4)), which yields the answer 320 N. However, as seen in the image, the actual answer is 420 N. I would appreciate any help. Thanks

Homework Statement The jib crane is designed for a maximum capacity of 10kN, and its uniform I beam has a mass of 200kg. a)Plot the magnitude R of the force on the pin A as a function of x through its operating range of x=0.2m to x=3.8m. b)Determine the minimum value of R and the...