What is Rod: Definition and 1000 Discussions

Röd (Swedish for Red) is the eighth studio album by Swedish alternative rock band Kent. It was released as digital download exclusively through the band's website on 5 November 2009 and physically on 6 November 2009. The first single from the album, "Töntarna", was released as digital download on 5 October 2009.
Röd is available in a standard edition and a deluxe edition box. The deluxe edition box version features the 11-track CD, a USB flash drive with high quality MP3 files as well as AIFF files, three 10" records which between them contain the whole album, and a 118-page book containing lyrics, abstract pictures and photographs. Due to distribution difficulties the deluxe edition was delayed until 11 November 2009.

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  1. K

    Equilibrium - A rod influenced by multiple rope tensions

    equilibrium -- A rod influenced by multiple rope tensions Homework Statement Smooth and identical rod has a weight of P. The rod seems to be in equilibrium with X and Y which has a weight of P. What can be the weight of X according to the values below?(ip means rope) P , 6P or 9PHomework...
  2. N

    Determine the Angluar Velocity of the Slender Rod.

    Homework Statement Calculate the angular velocity w of the slender bar Ab as a function of the distance x and the constant angular velocity w0 of the drum. I have attached an image of the question Homework Equations The Attempt at a Solution x = √(x2+h2)cos(θ) x' =...
  3. R

    Finding KE of a rod with two particles and angular velocity?

    In the figure, two particles, each with mass m = 0.79 kg, are fastened to each other, and to a rotation axis at O, by two thin rods, each with length d = 5.9 cm and mass M = 1.2 kg. The combination rotates around the rotation axis with angular speed ω = 0.32 rad/s. Measured about O, what is the...
  4. N

    Determine the Velocity and Acceleration of the Rotating Rod

    Homework Statement The body is formed of slender rod and rotates about a fixed axis through point O with the indicated angular properties. If ω = 4.6 rad/s and α = 4.4 rad/s2, determine the instantaneous velocity and acceleration of point A. I have attached an image of the question Homework...
  5. S

    Nonconducting Rod bent into Circle

    Question A thin nonconducting rod with a uniform charge distribution of positive charge Q is bent into a circle of radius R. The central perpendicular axis through the ring is a z axis, with the origin at the center of the ring. What is the magnitude of the electric field due to the rod at...
  6. L

    Torque applied to both ends of a rod, resulting shear?

    Hi, Can anyone explain what would be the maximum shear force experienced by a rod if equal and opposite torques (T) were applied at each end? In comparison to a rod that was fixed at one end and had a torque T applied at the other end would the maximum shear experienced by the rod be...
  7. sergiokapone

    Impact of rolling sphere with vertical rod

    Homework Statement Uniform sphere of mass ##m## and radius ##r##, rolling without slipping on a horizontal surface at a velocity ##v_0##, hits the end of a rod of length ##l## and mass ##10m##, hanging on a hinge (Figure). Determine how the ball will move and the rod after the impact. What time...
  8. sergiokapone

    How High Must a Rod Fall to Hit a Table Elastically at Both Ends?

    Homework Statement Rod AB of length 2l, inclined to the horizontal at an angle \phi, falls, without rotating, with some height h on a horizontal table and hits the table surface elastically first left, then right end. During the strike the right end, the rod again consist angle with the...
  9. Z

    Thermal effect of heat input on an iron rod - magnetostriction

    If an iron rod, inside two coils, incurs current going through the coils in the same direction, then the rod will increase in length and then it will begin to reduce in length. This is due to the magnetostrictive properties of the iron. When the currents oppose each other, so as to cancel...
  10. C

    Particle Motion on Rotating Rod: Derivation and Special Cases

    Homework Statement A particle of mass m is free to slide on a thin rod. The rod rotates in a plane about one end at a constant angular velocity w. Show that the motion is given by r=Ae^(-γt)+Be^(γt), where γ is a constant which you must find and A and B are arbitrary constants. Neglect...
  11. S

    Velocity(t), of rod moving in B-field

    Here's the question ------------------- Here's my attempt using energy approach. However, I'm kinda stuck. how do I solve this DE to get the expression for v(t)?
  12. S

    Current Carrying Rod On Inclined Plane.

    A conductingng bar of mass 1. w kg and length l = 1. x m is placed at rest on a frictionlsss plane inclined at an angle θ = 2 y degrees to the horizontal. A current I= 4 A flows through the bar in the − ˆj direction, and there is a uniform magnetic field B = 1 T in the kˆ direction. (a) What...
  13. K

    Semi-infinite non-conducting rod

    Homework Statement A "semi-infinite" nonconducting rod has a uniform linear charge density λ. Show that the electric field E at point P a distance R above one end of the rod makes an angle of 45° with the rod and that this result is independent of the distance R. Homework Equations...
  14. S

    MHB Finding Inclination of Rod on Cylinder to Wall

    A smooth circular cylinder of radius b is fixed parallel to a smooth vertical wall with its axis horizontal at distance c from the wall. A smooth uniform heavy rod of length 2a rests on the cylinder with one end on the wall in a vertical plane perpendicular to the wall. Show that its inclination...
  15. T

    Trying to find the angular speed of a rod.

    Homework Statement A uniform rod (length = 2.0m) is mounted to rotate freely about a horizontal axis that is perpendicular to the rod and that passes through the rod at a point of 0.5m from one end of the rod. If the rod is released from rest in a horizontal position, what is the angular...
  16. S

    What is the Length of an Aluminum Rod Creating a Standing Wave at 6180 Hz?

    Homework Statement An aluminum rod is clamped at the one- quarter position and set into longitudinal vibration by a variable-frequency driving source. The lowest frequency that produces resonance is 6180 Hz. Find the length of the rod. The speed of sound in aluminum is 4860 m/s. Homework...
  17. C

    Moment of Inertia: Object w/ Rod & Sphere

    Homework Statement An object is formed by attaching a uniform, thin rod with a mass of mr = 6.91 kg and length L = 4.88 m to a uniform sphere with mass ms = 34.55 kg and radius R = 1.22 m. Note ms = 5mr and L = 4R. What is the moment of inertia of the object about an axis at the left end...
  18. H

    Why is it easier to snap a longer rod than a shorter one?

    I'm a complete newbie to physics, just wanted an answer to something. Why is it easier to snap a longer rod compared to that of a smaller rod of the same material? Is it just down to greater torque applied with respect to the longer rod? I have tried to google it but it doesn't come...
  19. A

    How to disconnect connecting rod and crank

    I have a mechanism wish to disconnect connecting rod and crank when i cycling so that i do nt need to use additional force to turn connecting rod also but connect them once my driving system is set up and piston that connected to rod can rotate my crank how can i set up this mechanism?
  20. U

    Electric Field On A Point Charge Due To A Uniformly Charged Rod

    Homework Statement This is regarding setting up an integral to calculate the electric field on a point charge that is at a distance "a" from a uniformly charged rod of length "L". I have attached a picture of my work, which includes a diagram of the problem, and wanted to know if my thought...
  21. stripes

    What Is the Temperature Distribution Along an Insulated Rod?

    Homework Statement A very simple problem, but part of an assignment regarding heat flow. The question is: A 15 cm rod is insulated at one end, the other is in contact with a reservoir of temperature 37C. By thinking of the physics, after a long time, what is the temperature at the point 5...
  22. K

    Potential difference in rod rotating in magnetic field

    Homework Statement Q: A rod of length l rotates with a uniform angular velocity ω about the axis passing through its center and perpendicular to its length. A uniform magnetic field B exists with its direction normal to the plane of rotation. The e.m.f. induced between the center and anyone...
  23. N

    Help with practice test problem curved rod with charge density?

    help with practice test problem! curved rod with charge density?? Two plastic rods are curved. The left rod is a 120° circular arc of radius R, and has uniform charge density λ. The rod on the right is a 120° circular arc of radius 2R, and has uniform charge density -2λ. A point P is located...
  24. A

    Metal rod rotating in magnetic induction.

    Homework Statement A metal rod (1/sqrt(pi)) m long rotates about one of its ends in a plane perpendicular to magnetic induction of 5*10^-3 T. Calculate the number of revolutions made by the rod if EMF induced between the ends of the rod is 1.5 mV. I have been thinking about this problem for...
  25. M

    Where is the Maximum Bending Stress Located in a Tapering Rod?

    A uniformly tapering cantilever of solid circular cross-section has a length L and carries a concentrated load at the free end. The diameter at the fixed end is D and at the free end d. Show that the position of maximum bending stress occurs at a section (d/(2(D-d))*L distance from the...
  26. C

    Thin rod symbolic questions based on Image.

    Homework Statement A thin rod lies on the x-axis with one end at -A and the other end at A, as shown in the diagram. A charge of -Q is spread uniformly over the surface of the rod. We want to set up an integral to find the electric field at location ‹ 0, y, 0 › due to the rod. Use the...
  27. U

    Calculation of differential and integral rod worths

    Hi forum members. I need some guidance in the following question. In the Studsvik code Simulate-3 you can calculate differnetial and integral rod worths with the input card CRD.OCB. Further, you can specify if you want to lock hydraulics and fission products to some predefined state via the...
  28. B

    What Forces Act on a Ball Attached to a Massless Rod in a Vertical Loop?

    Homework Statement A ball of mass m is attached to a massless rod and is suspended from a frictionless pivot. It is moving in a vertical circle or Radius R such that it has speed v1 at the bottom. The ball is in a vacuum. Find an expression for the force exerted by the rod at the top of the...
  29. M

    Automotive Can Increasing Con Rod Length Lead to Detonation and Supplier Issues?

    hello, what happen if cod rod length increase by few hundred microns?
  30. S

    Charge on a point in three different locations with a thin semicircular rod

    Homework Statement A thin semicircular rod is broken into two halves, the top half has a total charge +Q uniformly distributed along it, and the bottom half has a total charge -Q uniformly distributed along it. http://imgur.com/tObt2V0 Homework Equations Indicate the direction of the net...
  31. brainpushups

    Normal Modes; Rod suspended from strings

    Homework Statement A thin uniform rod of length 2b is suspended by two vertical light strings, both of fixed length l, fasted to the ceiling. Assuming only small displacements from equilibrium, find the Lagrangian of the system and the normal frequencies. Find and describe the normal...
  32. S

    Attraction of a steel rod with a solenoid

    Homework Statement From this video: http://www.youtube.com/watch?feature=player_detailpage&v=mdZo_keUoEs#t=77s it shows that the steel rod will eventually stay in the middle of the solenoid. At first the magnetic field of the solenoid would look like...
  33. Z

    Falling (toppling) rigid tower (uniform rod)

    I am working on an animation, which involves a rigid, vertical tower falling (toppling) to the ground, and I am stuck at its core physics. Actually this is the same as the thin uniform rod initially positioned in the vertical direction, with its lower end attached to a frictionless axis...
  34. K

    Calculating Angular Momentum of a Rotating Rod | Mass M, Angular Velocity ш

    What is the angular momentum of a rod rotating about one end (mass M and angular velocity ш),about its center of mass?
  35. I

    Selection of relay for driving a immersion rod

    i am designing a heating element control system. i am looking for a relay(with 5V input voltage if possible or 12V) which can control an immersion rod with specification 16-A & 250 V AC. The following are my questions. 1. the heater has to be driven with power sockets(type M sockets -16A)...
  36. L

    Pivot doing work on the rotating rod

    http://dev.physicslab.org/Document.aspx?doctype=3&filename=RotaryMotion_RotationalDynamicsPivotingRods.xmlin this example, the rod is swinging with one end pivoted. conservation of energy was used in this example. the change in potential energy was converted to kinetic energy, and mechanical...
  37. T

    Rotational Dynamics Problem - Rod slipping against Block

    Homework Statement A uniform rod of mass m and length l is pivoted at point O. The rod is initially in vertical position and touching a block of mass M which is at rest on a horizontal surface. The rod is given a slight jerk and it starts rotating about point O. This causes the block to...
  38. R

    Finding linear density at a given location along a rod

    I hope someone can point me in the right direction on how to solve this, and hopefully I can explain it properly. Given a rod with a known length, mass and center of mass, how can I find the linear density at a given location (x) along the length of the rod. I want to say 'instantaneous'...
  39. T

    Moment of Inertia/Torque about point O of the rod

    Homework Statement A thin rod of length L and mass M is free to rotate at a point O at a distance L/3 from one end. a.) What is the moment of inertia of the rod about O? b.) What is the magnitude of the torque due to the rod's own weight about O when it is displaced from the vertical by and...
  40. U

    Solving for Angular Velocity of Rod: 6.8 rad/s

    Homework Statement The flywheel is rotating with an angular velocity of = 6.8 . Determine the angular velocity of rod at the instant shown. http://postimage.org/image/lfypabekb/ Homework Equations (1) V_B= ω x r (2) V_C= V_B + ω x r_C/B The Attempt at a Solution I do...
  41. R

    Help Needed: Last Physics Lab Assignment Rod Problem

    I need to get a 100 on this last Physics lab assignment, but I can't get this "rod" ...problem :( Help would be appreciated (a) L1 = (65 cm)/2 = 32.5 cm "CORRECT" (b) [(149 kg)(1) + (149 kg)(65 cm) + (149 kg)(65 cm + 32.5 cm)] / (3)(149 kg) = (149 + 9685 + 14527.5) / (447) =...
  42. M

    Velocities at B and C on a rotating rod

    Homework Statement In the attached image, find angular velocity of the rod and the velocities at points B and C. Homework Equations vB|A=0.3ω The Attempt at a Solution How do I know what angle the absolute velocity makes with the other vectors when put in a triangle? How would the velocity...
  43. S

    Solid Elasticity, Steel Rod shortening

    Homework Statement We have a steel rod with density ρ = 7,90 kg/m^3. When it's horizontally on the floor, it's length is L = 6,00m. The rods surface area A is a circle with radius r=0,04m. Steel has Young modulus E=2,1 \cdot 10^{11} Now the rod is lifted up so it's vertically straight...
  44. A

    Understanding the Rotation of a Freefalling Rod

    This has been brought up numerous times but I don't really understand it. Consider a rod in freefall. If you put your coordinate frame in the center of mass of the rod, there will be no torque around it and the rod as a whole will follow a straightline down. But now put a coordinate frame on...
  45. K

    Angular momentum: rotating rod and a ball

    Homework Statement A rod of length l swivels around an axis, denoted O in the drawing, located on the floor. The initial position is β=45°. A ball B is left to fall at the same time the rod is left to rotate. Who will arrive, first, to the floor: the ball or the edge A of the rod...
  46. N

    Thin rod at rest gets shot with bullet and rotates? Ang momentum problem? help

    A uniform thin rod of length 0.500 m and mass 4.0 kg can rotate in a horizontal plane about a vertical axis through its center. The rod is at rest when a 3.0 g bullet traveling in the rotation plane is fired into one end of the rod. As viewed from above, the bullet's path makes angle θ = 60°...
  47. Saitama

    Collision between disc and rod

    Homework Statement A small disc and a thin uniform rod of length l, whose mass is η times greater than the mass of disc, lie on a smooth horizontal plane. The disc is set in motion, in horizontal direction and perpendicular to the rod, with velocity v, after which it elastically collides with...
  48. E

    Find the steady-state temperature of the rod.

    A rod occupying the interval 0 ≤ x ≤ l is subject to the heat source f(x) =0, for 0 < x < L/2 f(x) =H , for L/2 <x <L ,H>0 (1)The rod satisfies the heat equation ut = uxx + f(x) and its ends are kept at zero temperature. Find the steady-state temperature of the rod. (2)Which pointis the...
  49. S

    What are the generalized coordinates for the suspended rod Lagrangian?

    Homework Statement A thin rod of length 2b is suspended by 2 light strings both attached to the ceiling. Using x, y1, y2 as your generalized coordinates right down the lagrangian of the system. Where x is the longitudinal displacement of the rod and y1 and y2 are the horizontal displacements...
  50. B

    Motion of a rectangular rod in free space

    Hello physicsForum.. I am trying to make a 2d physics engine for my game all on my own but I am stuck in the very basic problem. My problem is this.. If there is a rectangular body (with negligible depth since i am working on 2d) is present in free space as in attached file and a force of...
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