What is Spring: Definition and 999 Discussions

SPRING is a freeware GIS and remote sensing image processing system with an object-oriented data model which provides for the integration of raster and vector data representations in a single environment. It has Windows and Linux versions and provides a comprehensive set of functions, including tools for Satellite Image Processing, Digital Terrain Modeling, Spatial Analysis, Geostatistics, Spatial Statistics, Spatial Databases and Map Management.
SPRING is a product of Brazilian National Institute for Space Research (INPE), who is developing SPRING since 1992, and has required over 200 man-years of development and
includes extensive documentation, tutorials and examples. More than 70,000 users from 60 countries have downloaded the software, as of January 2007.

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  1. astrololo

    Spring Constant Calculation for a 0.2kg Bloc with 40cm Displacement

    Homework Statement A bloc of 0,2 kg is attached on a horizontal spring without any friction on the floor. The other side of the sprin gis attached to a wall. He does a movement of back and forth . Between the two extremities of the back and forth movement, the bloc has a displacement of 40 cm...
  2. astrololo

    Solving for Max Compression: 0.2kg Spring

    Homework Statement A bloc of 0,2 kg is attached to a spring on a horizontal surface with no friction. (The other side of the spring is attached to a wall, so it doesn't move) The spring constant is 5 N/m. If we pull on the spring, we move it by 0,12 m from its natural position and we let it go...
  3. M

    Spring mass on a rotating disc

    Homework Statement I uploaded a figure demonstrating the problem w and i are constants and disc is horizontal. Disc mass is neglected. Vibrating mass only moves along the direction of springs -only horizontally at this position- [PLAIN]http://[url=http://postimg.org/image/yxuleosq1/]...
  4. T

    Effect of massive spring on static vs dynamic experiment

    I've been reading about this but I couldn't find a conclusive answer. I have to measure the spring constant (k) using a vertical spring-mass (M) configuration and using two different methods: - static method: I calculate elongation vs weight and find a linear fit of the data (the slope is K) -...
  5. Elvis 123456789

    Spring/ Kinetic Energy Problem

    Homework Statement At a waterpark, sleds with riders are sent along a slippery, horizontal surface by the release of a large, compressed spring. The spring with a force constant k = 4300 N/m and negligible mass rests on the frictionless horizontal surface. One end is in contact with a...
  6. K

    Spring potential energy and mass

    Homework Statement One end of a vertical spring of spring constant k = 1900 N/m is attached to the floor. You compress the spring so that it is 2.50 m shorter than its relaxed length, place a 1.00-kg ball on top of the free end, and then release the system att = 0. (All values are measured in...
  7. Feodalherren

    How Do You Calculate the Length of a Torsion Bar Spring?

    Homework Statement Homework Equations T=(GJ/L)Φ G=modulus of rigidity J=polar moment of inertia L= length Φ=twist angle (rad) Direct shear = Force/Area Torsional Shear = Tr/J, where T is the torque and r is the radius from the center. The Attempt at a Solution G=11e6 KSI J=(π/16)d^4, where...
  8. T

    Solve Spring Stretch on 30° Ramp, 20kg, 500N/m, Friction 0.3/.2

    Homework Statement A block is sitting on a ramp with a spring behind it, which we are supposed to imagine we are holding. The mass of the block is 20 kg, the angle of the ramp is 30 degrees, and the spring constant is 500 N/m. 1) You pull so the block is accelerating at 4 m/s^2 up the ramp...
  9. benedict1

    How to calculate Young's Modulus for flat spring

    Hi, I have a question regarding calculating Young's modulus for a flat spring. I have a flat spring shown as the left one in the image. Now I fix the bottom of the spring and exert a force F on top of it and it bends for distance of d. Is there any way to calculate young's modulus for this...
  10. T

    Calculating Spring Stretch on a Ramp with Varying Acceleration and Friction

    1. Homework Statement We are dealing with a block of 20 kg mass on a ramp that is at an angle of 30 degrees. The spring constant given is 500 N/m. Picture- https://flic.kr/p/A3aCsM The only difference is that that we are supposed to be holding the spring stationary, it isn't attached to a...
  11. P

    Deriving the Force-Position Relationship for a Spring Powered Model Car

    Homework Statement In your design of an experimental spring powered model car, you note that the speed of the car (mass Mc) increases as the car travels further. The exact relationship is that v(x) = C|x|, where C is a constant and x is the position of the car with respect to the starting...
  12. astrololo

    The natural length of a spring

    Homework Statement A block is fixed on the extremity of a mobile ideal spring that is horizontal and which has the other side of it fixed (Non mobile). When the length of the spring is 50 cm, the block has a force of 5 N on the right; When the length of the spring is 80 cm, the block has a...
  13. O

    Need confirmation for spring mass system question

    Homework Statement A mass of 1.20 kg. originally at rest, sits on a frictionless surface. It is attached to one end of an unstretched spring (k = 790 N/m), the other end of which is fixed to a wall. The mass is then pulled with a constant force to stretch the spring. As a result, the system...
  14. B

    Hooke's law for vibrating massive spring

    Hello, Just for curiosity... Is Hooke's law valid for a vibrating massive spring ? I have done some calculations using both Newton's 2nd Law and the conservation of energy to a horizontal swinging spring connected to a small block in the absence of any friction. I have found that the tension of...
  15. R

    Mass-Spring Systems and the Relationship Between Force, Displacement, and Energy

    Homework Statement A mass is attached to a spring which is mounted onto a wall. This mass is on a frictionless horizontal surface. You apply a CONSTANT force to the mass and it comes to a stop in 10 cm. My question is, that since the mass comes to a stop in 10 cm then: Force Applied = kx...
  16. M

    Work done in vertical springs & External Agent

    Homework Statement I've encountered an answered problem in this book titled, "Physics for Scientists and Engineers with Modern Physics, 9th Ed" by Serway at page 187. So there is a spring which is hung vertically. 1. The first condition was the spring at an equilibrium state (ΔX=0) 2. The...
  17. carb

    Mass dropped with preloaded spring

    Hello everybody, I'm trying to figure out how to calculate xadd, the additional compression of a preloaded spring (initially compressed of xp) on which a mass is dropped from a height "h". I also wonder : - if the final compressed spring length is the same with or without preload ? - if the...
  18. P

    Block and spring on ramp; find compression

    An inclined plane of angle θ = 20.0° has a spring of force constant k = 525 N/m fastened securely at the bottom so that the spring is parallel to the surface as shown in the figure below. A block of mass m = 2.31 kg is placed on the plane at a distance d = 0.312 m from the spring. From this...
  19. D

    What Is the Maximum Speed of a Mass in a Driven Damped Oscillator?

    Homework Statement A small block (mass 0.25 kg) attached to a spring (force constant 16 N/m) moves in one dimension on a horizontal surface. The oscillator is subject to both viscous damping and a sinusoidal drive. By varying the period of the driving force (while keeping the drive amplitude...
  20. H

    Calculating Energy Components in a Pogo Stick Jump

    Homework Statement A man is jumping up and down on a pogo stick. For the purpose of this problem, we will think of such a stick as being a (massless) spring with a guy + stick on top. We will assume that no friction is involved, and so in principle the guy could keep jumping forever. At...
  21. B

    Projectile Motion spring launch

    Homework Statement I am trying to find the force needed from a spring to launch a mass of 800g to a length of 0.875m. This launch would be at the optimum angle of 45º. I am aware of all projectile motion equations but am having difficulty linking them to force and thus solving the problem...
  22. I

    Solving Spring Force Equation: 2X

    Hello, If we have a spring at rest and has a constant k=2 N/m (at its natural length with one end at origin (x=0) and the other end held stationary) is having a force applied on it. The force varies in same way as the the spring with function 2X. My question is how is it possible to start the...
  23. BluberryPi

    Solve Unknown Spring Equation from Foxtrot Comic Strip

    Hey, I am a new member, and I have a question. One of my favorite comic strip is foxtrot because it has so much physics:smile:! When I read this particular strip, however (7/30/2000- find it on Foxtrot GoComics) I was puzzled by the equations. Fortunately, 4 of them were printed in the Gocomics...
  24. G

    A spring is suspended on the ceiling of a truck, find acceleration?

    Homework Statement A massless spring with a spring constant k = 500 N/m is suspended from a hook on the ceiling of a cargo truck moving in a straight line (horizontally) on the highway. A child reaches over from her seat and suspends a 1.1 kg toy on the free end of the spring. The child...
  25. S

    What is the spring constant for the spring?

    Homework Statement A mass 2.74 kg is hung from a spring. The mass is pulled down a short distance and released, it oscillates with a frequency f = 1.972 Hz. What is the spring constant for the spring? Homework Equations f=1/2pi*sqrt(k/m) The Attempt at a Solution 1.972 = 1/2pi*sqrt(k/2.74)...
  26. yango_17

    Charged balls connected by spring

    Homework Statement Consider two small balls with charges +q and -q, connected by a spring with spring constant k. A homogeneous electric field E has been turned on. E is collinear with the line that connects -q to +q. By how much will the string stretch? Homework Equations Coulomb's Law...
  27. wololo

    Springs with Dashpot: Understanding Motion Equations

    Homework Statement Homework Equations ∑F=ma F=-kx x = Ae-γt/2cos(ωt + ∅) The Attempt at a Solution I have looked up this old thread but don't understand how to get the equation of motion from : ma1=-kx1-k(x1-x2) - bv ma2=-kx2-k(x2-x1) - bv...
  28. wein7145

    Repeat History: Design a test to prove who is right spring

    Homework Statement Not surprisingly there is an old forum post on this topic: https://www.physicsforums.com/threads/proving-force.46215/ However it doesn't contain the answer. Reposted: Two physics students are having a debate about the best way to define a force scale using rubber bands. Each...
  29. upender singh

    Stiffness constant of a spring

    1:question A weight W is suspended from a rigid support by a hard spring with stiffness constant k . The spring is enclosed in a hard plastic sleeve, which prevents horizontal motion, but allows vertical oscillations. A simple pendulum of length l with a bob of mass m (mg<<W) is suspended from...
  30. A

    Find length of spring in its equilibrium position

    As shown in Figure Q1a, a frictionless, massless, piston, supported by two springs, A and B, is held by a pin in a vacuum inside a rigid-walled container. The properties of the springs are: spring constants kA = 3,859 and kB = 3,090 (in N/m), natural lengths LA0 = 0.03 and LB0 = 0.1 (in m). When...
  31. A

    Find length of spring A in equilibrium position

    As shown in Figure Q1a, a frictionless, massless, piston, supported by two springs, A and B, is held by a pin in a vacuum inside a rigid-walled container. The properties of the springs are: spring constants kA = 3,859 and kB = 3,090 (in N/m), natural lengths LA0 = 0.03 and LB0 = 0.1 (in m). When...
  32. S

    Approximate spring potential energy U(x) for small oscillations

    Homework Statement "Take a PE function U(x), which has an equilibrium point at x=0, and provides a restoring force in that region, and show that a Taylor expansion around that area can be approximated by a SHO PE function for small x." Homework Equations U=.5kx^2...x =...
  33. B

    Maximum extension of a spring on an inclined plane

    Homework Statement A block of mass ##M = 1 kg## is placed of a fixed rough incline of inclination ##\theta=sin^{-1} \frac{7}{10}## and coefficient of friction ##\mu=\frac{1}{\sqrt{51}}##. It is connected to a spring of spring constant 100 N/m. Initially the spring is in natural state with...
  34. M

    [Physics waves] Spring and Block on inclined plane

    Homework Statement A block weighing 9.81N oscillates on a plane inclined of 60 degrees attached to a spring whose constant point is k=100N/m and the length is to equilibrium l0 = 0.6 m. While the block goes to the top losing speed , a timer is started ( to t0 = 0) when the block passes through...
  35. C

    How to find beam spring stiffness coefficient?

    The problem is attached.
  36. ELiT.Maxwell

    Spring (with mass) kinetic energy -- velocity assumption

    why we assume that velocity decreases linearly in a spring (i.e. if one end is fixed, then velocity of a particle (of spring) at x from fixed =vx/l where v is the velocity of the free end) and why does it hold good too when the spring (linear mass density) is non uniform... EDIT: spring has...
  37. V

    Equilibrium of forces lab- Sources of error spring scale

    I'm doing a lab where we use three strings connected to a ring, with each string attached to separate spring scales. What would be sources of error in this? And how does friction affect my results?
  38. A

    Schools Will grad schools see what I take senior spring?

    This is just a quick question. I'm planning out my course schedule for next semester and my senior year (I'm an electrical engineering junior in the US), and I'm trying to work all of my important classes in before it's time to apply to graduate school. Let's say I want to do research in a...
  39. X

    Lagrangian - 2 masses attached by spring

    Homework Statement EDIT: This is a 2D problem, so all of my ##x## variables should be vectors. I just realized this and it may answer my question, I don't know yet though. Two masses, ##m_1## and ##m_2## are connected by a massless spring of spring constant ##k##. The spring is at it's...
  40. Thom_Silva

    A Rotating motor compressing a spring

    Hello, I've recently came across this video (), where the authors use a motor to compress springs and therefore achieve locomotion. I've been thinking why is there a resulting downward net force. But i can't really figure it out. Thank you for time :) See the video from 1.16 minutes and...
  41. A

    Equilibrium of a spring and speed.

    Let's say I have a mass attached to an oscillating spring on a friction less horizontal surface. Why is it that the speed of the mass is greatest at equilibrium? I would have thought it would be greatest just before reaching the amplitudes due to maximum kinetic energy?
  42. einaap

    Deriving Function for Acceleration of Block on a Spring as a Function of Time?

    Hi fellow physicists, Suppose a spring with a stiffness k, is attached to wall and with the other side a block with a mass, m, a force F, then pulls the block away from the wall. How do you derive a function for acceleration of the block as a function of time, a(t)? When trying to solve this I...
  43. V

    Spring & Capacitor Homework: Equations & Solutions

    Homework Statement Homework Equations Force of attraction between the plates = (1/2)(QV)/d The Attempt at a Solution Initial charge on the capacitor Q1=CV Final charge on the capacitor Q2=2CV When switch is open force between the plates F1 = (1/2)(Q1V)/d1 = (1/2)(CV2)/d1 When switch...
  44. Spacexplorer

    Understanding How Dampers and Springs Work in Car Suspension Systems

    Hi guys. It could be an easy question but I started at the deepest. I wonder how it works like a car suspension system. How does damper work with spring? What is the difference between forced-nonforced systems? Why do we calculate frequency of spring? What does it provide us? What is the point...
  45. T

    How Does the Center of Mass Move in the Two Body Spring Problem?

    Homework Statement Two blocks sitting on a frictionless horizontal surface are connected by a light spring. The natural length of the spring is ##d##, and the spring constant is ##k##. The two objects are initially both at rest, with the spring neither stretched nor compressed. At time ##t =...
  46. N

    Block collision attached to spring

    Homework Statement A block of mass m is attached to a spring with a force constant k, as in the above diagram. Initially, the spring is compressed a distance x from the equilibrium and the block is held at rest. Another block, of mass 2m, is placed a distance x/2 from the equilibrium as...
  47. Max Genkin

    Admissions Spring, Summer Admission Opportunities

    Well, my request is for international undergraduate programs (phys&math) with timing not more than 4 months between application deadline and the start of studying in university. Help, cause I don't see one
  48. N

    How Far Do Colliding Blocks Slide on a Spring?

    Homework Statement A block of mass m is attached to a spring with a force constant k, as in the above diagram. Initially, the spring is compressed a distance x from the equilibrium and the block is held at rest. Another block, of mass 2m, is placed a distance x/2 from the equilibrium as...
  49. N

    How Fast Does the Lighter Block Travel When the Spring Relaxes?

    Homework Statement A system consists of two blocks, of masses m and 2m, attached to the ends of a massless spring with a force constant k. The system is placed on a horizontal frictionless surface. Initially, the spring is relaxed. The blocks are then pulled apart an “extra” distance x and...
  50. Samei

    Dropping ball into spring (inelastic collision)

    Homework Statement : [/B]I asked a question on this topic before, but I want to make sure I know the material well. So, I looked up another question similar to it (and a little more complex) to check my understanding. Here is the practice problem: A board with mass M, when placed into a coil...
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