Tension Definition and 1000 Threads

  1. M

    Deflection of a cantilever beam with applied tension at the free end

    Not much to add since the question is fairly simple, but again I'm wondering if applying tension at the free end of a cantilever beam affects the deflection it would have if only itself weight is considered. Intuitively, tension should tend to straighten the beam, and if it does, how to...
  2. ElectronicTeaCup

    Tension T in a parabolic wire at any point

    I am unsure how to go about this. I tried following the suggestion blindly and end up with with some cumbersome terms that are not the answer. From what I understand the derivative at each point would equal to T? Answer: I just can seem to get to this. I think I'm there but can't get it in...
  3. Diku Khanikar

    Waves and vibrations on a string

    Q.1. The length of a stretched string fixed at both ends has a length of l=10 cm, mass per unit length ρ= 0.01 gm/cm. If the tension ' T ' is produced by hanging a 11 kg weight at both ends of the string, then calculate, a) The wavelength of the first two harmonics, b) The speed of the wave...
  4. P

    Find the tension in the string of this two mass system

    I know that it will probably execute something similar to circular motion. I thought of conserving momentum but I think there is an external force being applied due to the impulse which will prevent me from doing so. I know that once I find the tension it would become very easy to find the...
  5. B

    Engineering Calculating Upthrust and Tension for a Submerged Pillar

    Hello, Looking for help on the following: A crane is used to lower a vertical cylindrical pillar into a reservoir. The pillar has a mass of 4 tonnes and is submerged to a depth of 2.5m. It has a diameter of 1.1m. The specific gravity of fresh water is 1125kg/m^3, and 9.81m/s^2. Use a free...
  6. archaic

    Static equilibrium problem: Finding tension

    The diagonal component of the boom's weight is ##R=w\cos\frac{\pi}{6}=\frac{\sqrt 3}{2}w##, and, considering ##R## as a "reaction", we have ##R_x=R\cos\frac{\pi}{3}=\frac{\sqrt 3}{4}w## and ##R_y=R\sin\frac{\pi}{3}=\frac 34w##. I will also have...
  7. K

    Tension in a String/Rope (tug-of-war)

    a) I think you can just use Fnet = m*a, so for student 1: a = 40N/60kg → a = 0.667 m/s^2 student 2: a = 50N/70kg → a = 0.714 m/s^2 b) Fnet = F - T, rearrange to solve for tension, → T = F - ma Student 1, T = 40N - (60kg*0.667m/s^2) → T = -0.02N Student 2, T = 50N - (70kg*0.71m/s^2) → T...
  8. Zohar

    Viscoty and Surface tension -- depends on the composition of the atmosphere?

    why isn't Surface tension reliant on the composion of the atm? For an instance; If you place a glass of water in a room with regular atmosphere or you place it in a room filled with other gasses. The coefficient of surface tension of the fluid will change? Maybe? why isn't viscoty of a fluid...
  9. McLaren50

    Understanding the deflection of a cable under tension with a force applied in the middle

    With the above in mind, I have a cable of E=60GPa, cross sectional area 7e-4m^2. I want to understand the relationship between the tension applied resisting the deflection of the cable when a force is applied so that the cable will not deflect more than 0.7m in this case. Take the force as...
  10. Amitayas Banerjee

    How does water rise along a glass plate? (surface tension question)

    So, I was studying about general properties of matter and topics like surface tension. I came across the phenomenon of water rising along a glass plate like in the picture. I looked for some mathematical interpretation of this on the internet and in some books. [![enter image description...
  11. ttpp1124

    Solving for Tension: A chandelier is suspended by two chains

    I've begun by drawing out the diagram. Since they want the tension in the 5m rope, I've broken it down into two vectors. I want to use T = mg + ma, but I don't think that's right because I don't have acceleration. Is there another formula I can use instead? Thanks!
  12. K

    Is non-linear Tension Force possible?

    I seem to remember from my school days that Tension Force can only be linear. Is this true? In 1 (in the graphic) the tension will follow the line of the rope In 2 there is an unbendable, unbreakable, steel cable formed into an arch. a ] In 3 which direction will the Tension be? b ] In 3 if...
  13. K

    I Horizontal Tension Force equation

    (not a homework question - I left education over 45 years ago) Hi, this just out of interest as I have been googleing this and can't find the answer I know the equation for tension force, for example a weight on a string, block on a ramp, etc. But is there something similar for a horizontal...
  14. jamiebean

    Understanding Tension Force: A Beginner's Guide to Physics

    I am new to physics I have no idea how the forces work and how to calculate the tension with f=ma thank you very much..
  15. Frigus

    What causes tension in a rope moving in a vertical circle?

    I don't get how ball moves in a vertical circle,we say tension provides centripetal force to the ball, i have posted a image in this post and in I which I have shown that their is a downward force mg and upward velocity,in this what will cause tension in the rope...from non inertial frame it is...
  16. V

    Tension forces of two wires in comparison to the gravitational force

    The correct answer is the second one. I honestly have no idea why this is so. I understand that the right rope has less tension that the left one since it's at a shallower angle from real world experience, but I don't really know why this is so, let alone how the forces compare to gravitational...
  17. E

    My understanding of tension is a little loose....

    A video on the MIT open courseware site, https://ocw.mit.edu/courses/physics/8-01sc-classical-mechanics-fall-2016/week-2-Newtons-laws/7.1-pushing-pulling-and-tension/, defines tension as the magnitude of the force between any two adjacent segments (A and B) of string - that is, ##T =...
  18. E

    How can I calculate the tension force?

    This is my attemp of solution: Since the formula to calculate the tension is T=mg I first calcualted the weight of the bridge with the ecuation W= mg m=W/g m= 18,000 N / 9.81 m/s m= 1834 kg So T=(1834)(9.81)= 17,991 N But this seems no logical to me because the Tension force is a bit less...
  19. R

    Find the accelerations of all three blocks and the tension in the rope

    I am thinking about solving it this way. The first three equation is from Newton law. Then the forth one is the constrain equation, after that I simplified the first three equations, and I am thinking about plugging them into the forth equation and solve for T after that I get the value of...
  20. R

    Tension in a rope wrapped around a shaft, pulling in a mass

    Hi everyone, I am thinking of solving it this way. Since Fc=mw^2r. and Fc=T. Then -dT=dmw^2r. where dm=m1(dx/l). and putting the lower at x=l the tension will be T=m2w^2l. Am I doing things right.
  21. Vivek98phyboy

    Force due to Surface tension here

    Why does the force due to surface tension act parallel to the surface here? I know that surface tension is a result of absence of cohesive force above the surface and thus the water molecules below pulls the surface down and keeps it like a stretched membrane. If the surface is pressed as...
  22. C

    Climbing with Tension: Exploring Muscle vs. Mechanical Energy

    Here the upward force on the camp is Tsinx <=360 Therefore T(max)=720N Here they have taken the equation that T-mg=ma This shows that the man is climbing due to tension. But I can't visualise how tension helps in climbing. Isn't it our own energy that helps us to climb. The muscle energy gets...
  23. Vivek98phyboy

    Reason for Calculating Surface tension

    When calculating force due to surface tension across a hemispherical drop, we look at only the circumference and multiply it by the value of surface tension. When we know that it is the surface tension which is responsible for the curved surface of the liquid drop, why don't we calculate the...
  24. C

    What is the tension force at the top of a spring?

    Good afternoon, I have some doubts about the tension force suffered by a spring to which a mass is hung and which is making a simple vertical armoin movement. My doubt lies in the fact that at the bottom of the pier (where the mass hangs), the spring exerts the restoring force that is given by...
  25. E

    Circular Motion/Energy: Find the position of the rings when tension = 0

    Here's my first attempt at a solution: First, I calculated the speed of one ring at the point where the tension would be zero. 3mgr(1-cosΘ ) = (1/2) * (3m) * (v^2). 3m * v^2 = 6mgr(1-cosΘ) Next, since I wanted the centripetal force, I took the result I got and divided by the radius. Fc =...
  26. harsh22902

    Surface Tension and Capillary Rise

    According to this definition I am unable to understand why does surface tension acts tangentially to surface of contact of liquid and capillary tube. And is the force of surface tension balancing the adhesive forces which lead to capillary rise OR it is the reason behind the capillary rise?
  27. N

    Is my solution for the Bungee Tension Problem correct?

    Hello again, I did a sum of the forces at the top and bottom of the motion and got: Top...mg=ma Bottom...T-mg=ma Got T=2mg when I substitute the mg in for ma at bottom.Then I assumed kx=T=2mg so x(length of cord) would equal 2mg/k Then V of wave would be ...sq.rt2mg/k Is it that simple? Feel...
  28. A

    How Do You Calculate the Tension of a Cello String?

    wavelength of string= 2*L wavelength of string=2*0.70m= 1.4m velocity of string= frequency * wavelength velocity of string= 220Hz * 1.4m= 308 m/s tension= (308m/s)^2 * 0.00196 kg/m =186N Is the tension correct?
  29. Kaushik

    Factors affecting surface tension

    I read the following two points: Temperature is indirectly proportional to surface tension. Adding impurities affect the surface tension of the molecules. Adding soluble impurities increases the surface tension whereas adding sparingly soluble impurity decreases the surface tension. Why...
  30. F

    Correct understanding of the tension force

    Hello, I am reviewing the concept of tension, a force that expresses the internal tensional state in a body (rope, chain, string, solid body). My understanding is that the force of tension "derives" from the stress tensor and relates (it is the product) the diagonal tensor components to an...
  31. Arman777

    I Is There really a Hubble Tension?

    There has been a lot of Hubble Tension questions and I know its kind of boring ( maybe for some people) but this seems interesting. I find this article https://arxiv.org/pdf/1911.06456.pdf It claims that "The results are shown in Figure 1 which makes it evident that the derived value of...
  32. M

    Exploring the Relationship Between String Tension & Audio Output Amplitude

    I am working on a guitar/piano synthesizer for my own interest. When a string is plucked or struck, tension increases causing a slight pitch bend and change in the inharmonicity. This change then settles as the note quiets down. Thus it is important to model how the tension rises above baseline...
  33. Kaushik

    Tension of a rod rotating on a horizontal table about a vertical axis

    If a rod is on a table (horizontally) and rotating about an axis that passes through one of its ends and vertical to the table, what would be the tension on the opposite end of the rod (the end opposite to the axis) . In this post (Check this post out from Socratic QnA), the limits take while...
  34. P

    Why is tension (T) only added to one side of an Atwood Machine?

    I solved for a1 prior to the force (f) being added. -a1 = a2 and T = m1*a1 + m1*g T = m2*a2 + m2*g <--substitute -a1 = a2, multiply everything by -1, add the two equations in order to solve for a1 (and thus also a2) T = m1*a1 + m1*g -T = m2*a1 - m2*g 0 = m1*a1 + m1*g + m2*a1 - m2*g...
  35. telephonedude

    How do I calculate the tension on top of a pole?

    Let's say I have a 1 meter steel pole with a diameter of 10 centimeters standing upright, and I have a cement block of 30 cm length and 10 cm width and an assumed weight of 5 kilograms. If I place the cement block on top of the steel pole, assuming that neither the pole or the cement block tips...
  36. A

    Understanding Sign Conventions in Elevator Tension Problems

    So the first thing that I did was solve for the acceleration of the elevator, given the velocities and distances given in the question. My question regarding this issue is not so much the procedure needed to solve the question, but rather the sign conventions for the values given and calculated...
  37. brotherbobby

    What is the maximum tension and friction force for a block held on an incline?

    (a) Ridiculously simple though it looks, I can't see how the string will be tight. One of the two has to be true. (1) The static friction ##f_S = mg \sin\theta = 25\times 10\times \sin 30^{\circ} = 122.5\; \text{N} ##. The maximum static friction ##f_S = \mu mg \cos \theta = 0.6\times 25\times...
  38. kepherax

    Tension in Rope using Torque? Did I do this correctly?

    I think I understand but just want to check if I did this correctly, or if there is more to it...
  39. Frigus

    Surface Tension: Why Tangential and Not Downward?

    Why direction of surface tension is tangential to the surface and not perpendicular downwards since it is caused by molecules in the bulk?
  40. brotherbobby

    Tension in a rotating rod at various places

    (The answer given in the text says ##\boxed{T_1\; >\; T_2}## but, as I show below, I think it's just the opposite). I begin by putting an image relevant to the problem above. Taking a small particle each of the same mass ##m## at the two positions, the centripetal forces are ##T_1 =...
  41. Frigus

    Classical Resnick Halliday Walker -- do they discuss surface tension topic?

    Is surface tension topic present is resnick halliday walker, principles of physics 10th edition,if present then please tell me on which page
  42. lemon__meringue

    What is time average of tension?

    Summary: My homework question asks: Consider a simple pendulum, undergoing small oscillations. Is the time average of the tension in the string of the pendulum larger or smaller than mg? By how much? My homework question asks: Consider a simple pendulum, undergoing small oscillations. Is the...
  43. P

    "Tension: T1 vs T2 - What is Correct?

    Homework Statement: Which part of the statement isn’t correct and which is? Is the tension larger in T1 or T2. Homework Equations: Fnet=mg The sum of the two tensions must equal the mass x gravity or weight since the mass is not moving so the force of gravity must equal the force of tension...
  44. Asterast

    Tension in the string while it descends

    so I took string below point A and Block as a system. Taking mass of string below point A as m and mass of block M. Taking downward direction as X axis. I get Mg+mg-T, Taking T as tension by upward part of string. Now the question says about block descending with acceleration a. so again forces...
  45. Like Tony Stark

    Body connected to two parts of a rope on an inclined plane

    The thing is that my professor said that if the velocity of ##A## is ##400 cm/s##, the velocity of ##B## is ##200 cm/s## because "##B## is connected to two parts of the rope and ##A## is conected just to one part", and he also said that that ##200 cm/s## is the velocity of ##B## with respect to...
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