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. B

    How a spiral torsion spring works

    How spiral torsion spring (used in mechanical watches to store energy) works? physics behind it ? ... I googled it but haven't got a clue. Where should I look for proper and detailed info.
  2. R

    Modes of Vibration of 3-DOF Spring Mass System

    Homework Statement Homework Equations a11 = a21 = a31 = a12 = a13 a22 = a32 = a23 $$ \begin{bmatrix} x_{1} \\ x_{2} \\ x_{3} \end{bmatrix} =ω^2m \begin{bmatrix} a_{11} & a_{12} & a_{13} \\ a_{21} & a_{22} & a_{23} \\ a_{31} & a_{32} & a_{33}...
  3. C

    Projectile Kinetic Energy and Recoil in Spring Gun Experiment

    Homework Statement A projectile of mass M1 is fired horizontally from a spring gun that is initially at rest on a frictionless surface. The combined mass of the gun and projectile is M2. If the kinetic energy of the projectile after firing is K, the gun will recoil with a kinetic energy equal...
  4. P

    Pushing spring from both sides - Find the spring constant

    Homework Statement A spring relaxed length is 0.5[m]. It is being pushed from both sides, and contracted to 0.4[m]. The force the spring is applying outwards is 3[N] on each side. What is the spring constant k? Homework EquationsThe Attempt at a Solution I attempted drawing a force diagram...
  5. L

    Gravity and Spring + KE problem

    Homework Statement Homework Equations shown above KE = .5mv^2 KE = Total Work Total work = Work by block - work by spring The Attempt at a Solution Shown above. Did i do the problem correctly? I'm always unsure if I am doing the problem right
  6. L

    Did i do this problem right? (Work by Spring and KE)

    Homework Statement Homework Equations W= KE Wspring = .5kx^2 The Attempt at a Solution since W = .5mv^2 = Wspring = .5x^2 i solve for v and get that v = sqrt(kx^2/m) if i plug in multiply the x by 2, the 2 squares and i get 4. the square root of 4 is just 2 and it comes out as a constant ...
  7. G

    Fortran Simulating Contact Force in a Moving Dashpot System Using FORTRAN

    Hi there I am really new into programiing thing, and I am trying to make program of this problem usin FORTRAN I want the output to be Time,poisiton,velocity and contact force and i already know = amplitude U = velocity of the car d = rail distance and so far this is my program...
  8. A

    Elastic potential energy problem

    Homework Statement A 1.00kg mass and 2.00kg mass are set gently on a platform mounted on an ideal spring of force constant 40.0 N/m. The 2.00 kg mass is suddenly removed. How high above its starting position does the 1.00 kg mass reach? Related to it... An 87 g box is attached to a spring with...
  9. K

    Understanding the Longitudinal Wave Velocity of a Helical Spring

    v = [sqrt(D/m)] * L, where D is spring constant, m is mass of spring, L is length of the spring My lecturer give me this formula to find the longitudinal wave velocity on an helical spring. May i know how to derive this formula? < Mentor Note -- this is not technically a homework question, but...
  10. ReidMerrill

    2nd order ODE: modeling a spring

    Suppose a spring with spring constant 6N/m is horizontal and has one end attached to the wall and the other end attached to a 3 kg mass. Suppose the friction/damping constant is 1 N s/m Set up a differential equation that describes this system with x denoting displacement of the mass from...
  11. C

    Conservation of Energy: Spring pushing a block up an incline

    Homework Statement "Consider a 250 gram block on a 10 degree frictionless incline and in contact with a spring of constant 1.2 N/cm. If the block is launched from rest by the spring with an initial compression of 6cm, how fast is the block moving at the point of release from the spring? How...
  12. S

    Spring Question -- A mass falls onto a spring compressing it....

    Homework Statement An object with a mass of 6kg falls 1.8m onto a spring with a spring constant of 2x10^3 N/m. At that instant, the velocity of the object is 4m/s. What is the compression of the spring and the max displacements of the spring. m = 6kg v = 4m/s h = 1.8m k = 2x10^3N/m Homework...
  13. R

    Calculating Work Required to Stretch a Spring by Additional Distance

    Hey everyone, I'm really hoping somebody will be able to help me with this problem. I've searched all through my textbook, notes, and the Internet, but I keep getting the wrong answer. Here's the question: If it requires 6 J of work to stretch a particular spring by 2.0 cm from its...
  14. M

    Sizing of a damping - spring - mass system

    Hello All, I have come across a problem, which has troubled me for some time now. What needs to be done is the following: A mass on a rod 0.6m (mass less) has a mass of 1 kgr attached at the end of it. The rod needs to be rotated 60 degrees, within t=120 sec (see image). What I would like to...
  15. F

    Max Velocity of Damped/Undamped Spring

    Homework Statement A mass on the end of a spring is released from rest at position x0. The experiment is repeated, but now with the system immersed in a fluid that causes the motion to be critically damped. Show that the maximum speed of the mass in the first case is e times the maximum speed...
  16. A

    Minimum spring force required to keep a car level

    Homework Statement This is an attempt to solve a problem I asked about here https://www.physicsforums.com/threads/can-a-car-ever-sit-like-this.929453/ Homework Equations F = kx spring force The Attempt at a Solution using the largest angle down it can get with the front spring compressed all...
  17. C

    How Do Friction and Spring Constants Affect Block Velocities?

    Homework Statement A light spring of force constant 3.90 N/m is compressed by 8.00 cm and held between a 0.250 kg block on the left and a 0.530 kg block on the right. Both blocks are at rest on a horizontal surface. The blocks are released simultaneously so that the spring tends to push them...
  18. J

    I Gravity changes produced by a compressed and stretched spring

    If I compress a spring beyond its most relaxed point it will have more energy and thus by General Relativity produce a stronger gravitational field than the uncompressed spring will. But suppose instead I pull in the opposite direction and stretch the spring beyond its most relaxed point it is...
  19. R

    Conservation of energy -- Two charges separated by a spring

    1. Two identical charged particles which are point masses are fastened to the two ends of a spring of spring constant 100 N/m and the natural length 10cm.The system rests on a smooth horizontal table.The charge of each particle is 2*10^(-8)C.the extension of spring if the extension is small as...
  20. A

    Spring angles at static equilibrium on application of force

    Homework Statement Two linear springs with stiffness Kh, Kv are attached to a single mass m at right angle to each other, i.e; one of the spring(Kh) is in the horizontal direction(x-axis) and the other(Kv) is in the vertical direction(y-axis). A constant force F is being applied to the mass...
  21. C

    MHB Finding the final distance for the compressing in a spring system

    Dear Every one, Here is the question to the problem: As shown in the figure below, a box of mass m = 5.00 kg is sliding across a horizontal frictionless surface with an initial speed vi = 2.40 m/s when it encounters a spring of constant k = 2230 N/m. The box comes momentarily to rest after...
  22. J

    Understanding the Harmonic Motion of Two Masses Connected by a Spring

    Homework Statement Homework EquationsThe Attempt at a Solution i) ##x_{cm} = \dfrac{m_1x_1 + m_2x_2}{m_1 + m_2}## At any time t , ##x_{cm} = v_0t## and ##x_1= v_0t - A(1-\cos{ωt})## From the above two , we get ##x_2 = v_0t + \dfrac{m_1}{m_2}A(1-\cos{wt})## I'm not clear what to do in...
  23. L

    Object on a vertical Ring with spring attached

    picture: https://ibb.co/k5P0GG Two objects slide without friction on a circular ring of radius R, oriented in a vertical plane. The heavier object (of mass 3m) is attached to a spring with an unstretched length of zero (admittedly an unphysical assumption) and spring constant k. The fixed end of...
  24. aatari

    Understanding Mass-Spring Behavior in Zero Gravity

    Hi Guys, So I am using the following simulation for this activity (Mass and Springs). The concept I need help with is to understand why when attaching a mass, the spring moves downward when the gravity is zero? If there is no gravity my limited understanding is that spring should not move...
  25. H

    Maximum height reached by object released from a vertical spring

    Mentor Note: thread moved, therefore no template A mass m is placed on a vertical spring and allowed to reach equilibrium, whose level is ##e_0## below the original level of the spring before placing the mass. It is then pushed downwards such that it is now a distance ##x_0## below the...
  26. E

    Work done by gravity and by a spring

    Homework Statement I have two objects that slide without friction on a circle of radius R, oriented in a vertical plane, as seen on the attached photo. The heavier object (mass = 3m) is attached to a spring with an unstretched length of zero and spring constant k. The fixed end of the spring...
  27. A

    Distance of box pushed up incline by spring

    Homework Statement A block of mass m=1.5kg is attached to a spring of constant k=590N/m. It is initially at rest on inclined plane of 21 degrees, and coefficient of kinetic friction between block and plane is MUk=.19. In initial position, where spring is compressed by d=.18m, mass is at lowest...
  28. J

    Calculating Amplitude and Acceleration in Harmonic Motion - Physics Homework

    Homework Statement A spring holds a weight of 800 g. The spring is set in a harmonious swing. The frequency f for the oscillation is 1.4 Hz. When the weight is 5 cm above the equilibrium position on the way upwards, a velocity of 1.1 m / s is noted a) Determine the amplitude of the movement. b)...
  29. E

    SHM Energy Conservation in a Spring

    1. The problem statement, all variables, and given/known data Describe the energy conversions in a spring undergoing simple harmonic motion as it moves from the point of maximum compression to maximum stretch in a frictionless environment. Focus on points at which there will be maximum speed...
  30. Muthumanimaran

    Capacitor with dielectric as spring

    Homework Statement Two parallel plates of metal sandwich a dielectric pad of thickness d, forming an ideal capacitor of capacitance C. The dielectric pad is elastic, having a spring constant k. If an ideal battery of voltage V across its terminals is connected to the two plates of this...
  31. C

    Maximum extension of system with two blocks connected by a spring

    Homework Statement Two blocks of masses m, and m2 are connected by a spring of spring constant k. Suppose each of the blocks is pulled by a constant force F Find the maximum elongation spring will suffer and the distances moved by the two Homework EquationsThe Attempt at a Solution the two...
  32. C

    Spring in Space: 3 Questions Answered

    I would like to ask some questions. I am in a spacecraft (I have grip on the floor) and at one end a spring is attached to the wall. I hold the spring and begin to walk backwards, extending the spring. 1) What will happen to the spacecraft as I walk backwards? 2) What will happen to the...
  33. R

    Determining energy from spring arrangements (parallel&series)

    I'm trying to figure out how to calculate the difference between applying different extremes in spring arraingement for tension applications parallel'd, series and mix of them.I have some springs which are about 18” long and stretch to 30”, so they stretch 12”. If 8 springs are available and the...
  34. T

    Quadratic equation for maximum compression of a spring

    Homework Statement A 1.2 kg block is dropped from a height of 0.5 m above an uncompressed spring. The spring has a spring constant k = 160 N/m and negligible mass. The block strikes the top end of the spring and sticks to it Find the compression of the spring when the speed of the block...
  35. H

    With which forces and why spring acts on two bodies

    Homework Statement Suppose we have spring which is between two bodies of different mass, with which force spring will act on every of them? Homework Equations Spring acts on a body with force kx The Attempt at a Solution A-/\/\/\/\/\/\/\-B Suppose body A has mass 2kg and body B has mass...
  36. B

    Choosing Axis of Rotation in Cylinder Oscillation Problem

    Homework Statement Here is a problem we worked in class. I already know the answer, just had a question on the method. Two cylinders are connected with by a small rod (with presumably negligent mass) through their centers. The cylinders can roll freely. A spring is attached to the small rod...
  37. O

    Period of Oscillation of a Cylinder Attached to Two Springs

    Homework Statement A solid cylinder of mass, M, is connected to two springs of total stiffness, k. The springs are connected tangentially (on top) to the cylinder. The other ends of the springs are attached to walls. What is the period of oscillation of the cylinder assuming that it does not...
  38. S

    Dropping a Block on a Spring with Completely Inelastic Collision

    Homework Statement [/B] A block of mass, m, is dropped from height, h (above the plate), onto a plate of mass, M, which is attached to a spring with spring constant, k. The block sticks to the plate and the system starts to oscillate. What is the amplitude of the oscillations. Homework...
  39. I

    Minimum Mass required to lift up an object from a spring

    Homework Statement FInd min mass so that block loses contact with ground. Spring is initially in its natural length, the mass attached to spring is on ground(M) Homework Equations Equations of conservation of energy The Attempt at a Solution Min compression = 2mg/k to lift up object, Normal...
  40. Wrichik Basu

    Determining Acceleration due to gravity using a Spring

    I want to determine the acceleration due to gravity at a place using a helical spring. For this, I've first calculated the extension in length of the spring (##x##) for a particular load (##L##) on the pan. Then I've plotted a graph for ##L## vs ##x## for different values of L and corresponding...
  41. snate

    What Determines the Maximal Elongation of a Spring in a Pulley System?

    Homework Statement 2 bricks of mass m are located near the edge of a smooth horizontal surface, they are connected by an ideal weightless ,unstretched spring with a length of l0 and spring constant k. The brick which is closer to the edge is connected to another brick of the same mass by an...
  42. T

    Understanding the force on an item placed on a spring

    I hope you enjoy the image I made to facilitate my query. I wanted to add Thor as my force input but don't want any copyright infringement.. If I have a compression spring with a spring rate of K, on a fixed surface with an apple on top and a hammer... If hammer applies force N, what does the...
  43. A

    Simple harmonic motion -- The spring and mass are immersed in a fluid....

    1. A mass, M = 1.61 kg, is attached to a wall by a spring with k = 559 N/m. The mass slides on a frictionless floor. The spring and mass are immersed in a fluid with a damping constant of 6.33 kg/s. A horizontal force, F(t) = Fd cos (ωdt), where Fd = 52.5 N, is applied to the mass through a...
  44. I

    Spring Problem (Hookes law)

    Homework Statement A block of mass M is hung on a vertical spring. We have to find spring constant k, x (displacement from mean position) given. Homework Equations 1/2kx^2 = mgx mg=kx The Attempt at a Solution When i conserve energy, 1/2kx^2=mgx ⇒ k= 2mg/x But when i use mg=kx, I get k=mg/x...
  45. I

    Switch cover Snap-up spring mechanism?

    Hi. I'm searching for a name of the spring mechanism that snaps-up and snaps-down this type of Switch cover https://cdn.sparkfun.com//assets/parts/6/9/9/0/11310-03a.jpg . on the left side of this red cover, you can clearly see the spring and few other things, that makes it to resist any change...
  46. chopnhack

    Two point charges repelling, stretching a spring

    Homework Statement Two spherical point charges each carrying a charge of 40 mC are attached to the two ends of a spring of length 20 cm. If its spring constant is 120 Nm-1, what is the length of the spring when the charges are in equilibrium? Homework Equations 1) F = k*(q^2)/r^2 where k is...
  47. M

    Spring Simulation: Visualize and Analyze Moving Systems

    How can I simulate this spring system and see how they move and behave? Thank you.
  48. L

    Varying the strength of a spring or something similar

    I have an idea for an invention that focuses on a spring that supports weight. Is there a way to manually make a spring vary how much weight it supports? Or is there maybe something else other than a spring that could do the same thing I need the spring to do, but could vary how much weight it...
  49. Datta108

    Rotation of a drum attached to a spring

    Homework Statement Rotation of a small drum of mass moment of inertia 0.44kg.m^2 and with frictional resistance torque 0.3 N.m is initiated by a string wound around its 20 mm diameter shaft and attached to a stretched spring, as shown in the figure. If the spring, which has a stiffness 2N/mm is...
  50. Victoria_235

    Circular wire with ball and spring problem

    Homework Statement Here is the problem. A small ball of mass m moves without friction attached to a cwire. The ball moves under the action of gravity and a spring of constant k whose other end is fixed in the point A, with OA = R / 2. The spring is tension free when the spring is R/2 to...
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