Statics Definition and 888 Threads

  1. Cyrus

    Why Do Cables Use dx for Distributed Loads and ds for Weight?

    First, on an unrelated note, I would like to share an anwser I think I found to be correct on a question I posted here a while back. I asked about how a smooth collar that was Not Pinned could prevent a moment. The problem I was faceing was the fact that in order to have "play" so that the...
  2. M

    Statics: Magnitude of vectors HELP

    Statics: Magnitude of vectors HELP! Could someone just tell me how to start this problem. I can't seem to think of anything right now.
  3. Cyrus

    Reviewing statics and came across this problem

    Im reviewing statics and came across this problem. There is a beam pin connected at one end and roller connected on the other. There is a moment at the pin and a force somewhere along the beam. Then they section it to find the internal normal shear and moment. One of the things i found slightly...
  4. T

    Solving a Spring Problem in Engineering Statics

    Spring Problem I need some help or hints on this exercise When a certain linear spring has a lenth of 180mm, the tension in it is 170N. FOr a length of 160mm, the compressive force in the spring is 130N. a. What is the stiffness of the spring in SI units? In U.S. Customary units? b. What...
  5. N

    What Is the Maximum Angle Theta for Equilibrium in a Statics Weight Problem?

    One end of a uniform meter stick is placed against a vertical wall. The other end is held by a lightweight cord that makes an angle theta with the stick. The coefficient of static friction between the end of the meter stick and the wall is 0.370 . What is the maximum value the angle theta can...
  6. N

    Seesaw: simple statics problem?

    Seesaw: simple statics problem? Q: A uniform seesaw is of length 3.90 m and weighs 235 N. The seesaw is pivoted about a point on its bottom surface and the location of this pivot along the length of the seesaw can be adjusted as far as a distance 0.170 m from the center of the seesaw. Little...
  7. C

    Solve Statics Problem for Bone Rongeur Machine Force at E

    Here's the problem: "The bone rongeur shown [refer to attachment] is used in surgical procedures to cut small bones. Determine the magnitude of the forces exerted on the bone at E when two 25-lb forces are applied as shown." I understand that this "machine" can be broken into 4 free-body...
  8. C

    Statics - 3D equilibrium problem

    Here's the question: "A camera of mass 240g is mounted on a small tripod of mass 200g. Assuming that the mass of the camera is uniformly distributed and that the line of action of the weight of the tripod passes through D, determine (a) the vertical components of the reactions at A, B, and C...
  9. J

    Statics Help Needed Desperately: Determine Forces on Frame

    statics help needed...desperately! The Frame in the Attached file supports a suspended weight W = 40 lb. Determine the forces on members ABCD and CEG. (image available at my website... http://geocities.com/jessparker502 I know how to calculate the forces when the wheel isn't present...
  10. P

    Help Padford with Statics Homework: Friction Formula

    now on question 8 of my homework, and i am starting to wonder if i;ve been getting these question right. It's to do with friction. Relativally simple question: When an object is stationary, would the formula to find the resolved friction be: F = (mew, u) R or F (is...
  11. S

    Easy Question about Fluid Statics

    I am a newbie to fluid mechanics, and I am confused about the "hydrostatic paradox". To begin with, consider three containers. All three have the same base area (all circular), but the angle between the base and the "wall" are all different: Container 1: obtuse angle Container 2: right angle...
  12. T

    Struggling with Statics Problems? Need Help with Equations?

    I would like to know if anyone could help me with the attached statics problems. I've worked on these for quite sometime and haven't been able to figure them out. Thanks
  13. S

    Need Help with a Physics Statics Problem Involving Cords and Pulleys?

    Hey, I'm having a lot of trouble with this physics homework problem: The cords BCA and CD can each support a max load of 100 lbs. Determine the max weight of the crate that can be hoisted at constant velocity, and the angle theta for equilibrium. The picture shows B attached to a pulley on...
  14. S

    How Does the Cross Product Help Calculate Tension in a Cable?

    In the problem: A horizontal boom supporting the sign is of uniform construction and weighs 50 N. If the sign weighs 150 N, the tension in the supporting cable is? Could I use the cross product and if so how? The answer is 350 N.
  15. S

    Where to Find Statics Practice Problems for Physics Re-Test Preparation?

    Hi I have a Physics re-test tomorrow on Statics. Since everyone failed the 1st statics test he is going to let us take another one (he's really nice :smile: ). It is not going to be like the 1st one. Where can I get some statics practice problems?? I'm doing ALL of the problems in the book...
  16. S

    What Went Wrong in Calculating Tensions in These Statics Problems?

    1.) A uniform rod AB is 1.2 m long and weighs 16 N. It is suspended by vertical strings AC and BD. A block P weighing 96 N is attached at E, .3 m from A. The tension in the string BD is? http://img116.exs.cx/img116/2822/STATICS1.jpg I did: (.3m)(96N)+ (.9m)(16N) - (1.2 m)(x) = 0 x=36N...
  17. C

    This time its a statics problem

    A nonuniform bar is suspended at rest in a horizontal position by two massless cords as shown. One cord makes the angle theta1 = 36.9 with the vertical; the other makes the angle theta2 = 53.1 with the vertical. If the length L of the bar is 6.10m, compute the distance x from the left-hand end...
  18. C

    This time its a statics problem

    A nonuniform bar is suspended at rest in a horizontal position by two massless cords as shown. One cord makes the angle theta1 = 36.9 with the vertical; the other makes the angle theta2 = 53.1 with the vertical. If the length L of the bar is 6.10m, compute the distance x from the left-hand end...
  19. D

    How do I solve internal force problems in statics?

    Please Help! Internal Forces in Statics I have been attempting to answer the problems on my Statics assignment for about a week now but I have not been so success full. I have only be able to answer on of the problems the other three below I get stuck on. Can someone please help me get past...
  20. O

    How Do You Solve Difficult Engineering Statics Problems?

    Please Help !Engineering Statics problem i got a hard professor, been tryin to work out this problem for days. still stuck, please him. i don't know wat to do,
  21. M

    Is it possible to do statics and dynamics at the same time?

    I have finished university level physics and calculus classes. I am planning to take both Statics and Dynamics next semester at the same time. I am just looking for a passing grade. Is it possible to do Dynamics simultaneously with Statics? I am willing to put few weeks to look into...
  22. L

    Solving Statics Truss Problems: Plotting Force in Member BC & Angle ø Range

    The question is stated below. I found out an answer but it doesn't seems to be correct to me. I made a few sketches to clear things up a bit, sorry for bad quality, too much compression. The simple truss of Prob. 4/2 is modified as shown in the figure, in that the angle of the support surface...
  23. D

    What is the force on the handle in a statics problem using Excel?

    I have a problem in statics that I must use excel to do and my instructor modified the given question in a few ways to allows to use the capabilities of excel to find what the question asks for. http://herograw.com/5-51.JPG These are my instructors additions: If the whole excel...
  24. S

    Understanding Statics: Examples in Computer and Electrical Engineering Problems

    Question about Statics! Hey I'm having trouble finding examples of statics in different engineerings. See i ave this homework assignment where i have to look up an example problem of either computer or electrical engineering. The catch is that i have to find a problem related with statics...
  25. E

    Sample Exam Problem 2 Help | EM223 Statics | NEGAHBAN

    I am trying to solve the problems on a sample exam, I am stuck on Problem 2, can anyone help? I can't get to help until tomorrow! Thanks! http://em-ntserver.unl.edu/NEGAHBAN/EM223/sexam2/sexam2.htm
  26. A

    What Calculations Are Needed to Achieve Equilibrium in These Statics Problems?

    Hi, I have a couple of questions from a statics assignment that I'm in need of help on. Here's what I have so far: http://216.170.11.226/pub/6131.jpg Two rods are connected by a slider block as shown. Neglecting the effect of friction, determine the couple Ma required to hold the system...
  27. M

    Can Someone Explain Statics and Torque for an Applied Maths Exam?

    Hopefully someone here knows what I'm talking about, but here it goes. I'm doing my leaving cert applied maths paper in 2 days time, and I'm stuck on this question. I can't follow the solution available on the internet, so i need someone to go through it step by step. Its Q7 in the paper...
  28. K

    Mechanics 2 - Statics of rigid bodies. Please help.

    I'm having difficulty with the question, perhaps mainly because it is consists completely of unknowns, with little or no numbers. Help, in the form of steps to reach the proof would be much appreciated: 'A uniform ladder of mass M rests in limiting equilibrium with one end on a rough...
  29. S

    Help with Statics Problem | Shaun

    Please help with this problem: http://labphysics.uncc.edu/Phys2101/001/Test3A-001-F94.html #4 Please any help would be greatly appreciated. AOL SN: spatel600 Please let me know. Thanks. Shaun
  30. P

    How do I solve this challenging mechanic statics problem?

    I have a problem for HW that is driving me crazy! A copy of the original problem from the text is attached. Here is what I have done so far... First, I split the area under the force horizontally into two triangles and found the centroid of each. Centroid of upper triangle is 3m from...
  31. F

    What is the best approach to solving this Statics problem?

    Argh! Statics is a pain. Argh, this problem is killing me. I've tried a couple of approaches to this proble. First approach was to break it into 4 'Y' shaped vectors with with points A,B,C,D as the centers of the 'Y'. No avail. The next approach was to couple the forces to the origin but the...
  32. P

    What is an extension in a statics problem?

    I've yet to taken a statics class yet, only physics one, but I'm having a hard time trying to define what an extension is on one of my home work problems. The problem is kind of long(about a page long), hopefully I will be giving a enough info on my problem. Here goes You have a pin jointed...
  33. F

    Calculating Reactions at C & D Using 2 Force System | Step-by-Step Guide

    i attached a picture of what it looks like. I am supposed to find the reactions at c & d, and the reactions at a & c. i think its supposed to be done using a 2 force system. i have no clue how to even start this.
  34. P

    How can I solve for W in this tricky statics problem without exceeding 1050N?

    I am having trouble with a HW question that has been driving me crazy for a few days now. I have to solve for W ( a hanging weight) that will not cause either T1 or T2 to exceed 1050N. So far I have drawn the free body diagram that is attached as a word doc, and the angles I found based on the...
  35. F

    What are the Moments and Forces in These Statics Problems?

    ive been wrestling with this for almost an hour and don't even know where to begin. A)The .732M X 1.2M lid of ABCD of a storage bin is hinged along side AB and is held open by looping cord DEC over a frictionless hook at E. if the tension in the cord is 54, determine the moment about each...
  36. F

    Statics lever and valve question

    a lever is resting on a valve. the valve is located 3 in from the end of the lever. the total length of the lever is 9.5 in. a 4 lb force is present at the opposite end of the lever. the force makes a 28 deg angle with the lever. the lever makes a 20 deg angle with the horizontal. I am supposed...
  37. F

    Finding Cable Tension Components with Given Angles

    ive been wrestling with this for an hour and a half, and all I've got it Theta y and Fy. a tree is being supported by cables. the tension in cable AB is 4.2 KN. all it gives me to go on is 2 angles. it 40 deg toward z axis from x axis. and the cable makes an angle of 40 deg with the ground...
  38. F

    Solving for Unknown Cable Forces in a Beam: Easy Statics Question

    There are three cables holding a beam in place. one cable, AC, is horizontal and coming off the left top of the beam. it has a value of 4KN. Another cable,AD, makes a 30 deg angle with AC and has a value of 5.2 KN. I need to find the magnitude of the third cable,AE, and the total force on the...
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