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. Z

    Finding density of fluid from a mass on a spring in fluid

    http://imgur.com/rE7jLlC When setting up the sum of forces I had an unknown value for the spring, buoyancy, and normal force. What I tried was setting up a triangle to find the length of the spring, which was 1.039m with that I could find the force acting on the spring, 4.3N, which would be the...
  2. I

    Equation of motion for a rotational mass and spring system

    Homework Statement A small ball with mass M attached to a uniform rod of mass m and length l pivoted at point o and attached to two springs with spring constant k1 and k2 at distance d1 and d2 from point o as shown in Fig 2. The system oscillates around the horizontal line. Assume the system...
  3. K

    Finding the maximum compression of a spring

    Homework Statement A block of mass m1 slides along a frictionless table to the right with a speed of v1. A second mass M2 slides in the same direction with a speed of v2 such that it will collide with m1 which is in front of m2. Say that a spring of stiffness k is attached to one of the masses...
  4. Suraj M

    Solving Spring & Block Homework Problem

    Homework Statement The figure has 2 blocks, each 320 g connected by a light string. The horizontal surface is smooth. The block A is attached to a spring of spring constant 40 N/m whose other end is fixed 40cm above the horizontal. Initially the spring is vertical and unstretched. Homework...
  5. Suraj M

    Calculating the Height of a Block Launched from a Compressed Spring

    Homework Statement A block of mass 250 g is kept on a vertical spring with spring constant 100N/m fixed from below. The spring is now compressed to have a length 10 cm shorter than its natural length and is released. How high does the block rise?g = 10m/s Homework Equations E=½kx² and other...
  6. Yam

    Spring constant and velocity

    Homework Statement [/B] The force constant of a spring is 600 N/m and the un-stretched length is 0.72 m. A 3.2-kg block is suspended from the spring. An external force slowly pulls the block down, until the spring has been stretched to a length of 0.86 m. The external force is then removed, and...
  7. Y

    Potential energy. What is the spring constant?

    Homework Statement Figure 8-36 shows an 8.00 kg stone at rest on a spring. The spring is compressed 10.0 cm by the stone. (a) What is the spring constant? 2. Relevant formula Mechanical energy is conserved The Attempt at a Solution The decrease in gravitational potential energy that occurs...
  8. X

    Does the potential energy of a spring do work on the both

    Suppose we have two boxes, A and B with different masses, the spring is fixed to block A. Then we take block B and press it against block A so that the spring compresses. Afterwards, we let go of both boxes. If we were to model this using the conservation of energy, then it is known that...
  9. Jediknight

    What is the maximum distance traveled by the block in a vertical spring system?

    Homework Statement The hand in (Figure 1) (a) holds a vertical block-spring system so that the spring is compressed. When the hand let's go, the block, of mass m, descends a distance d in a time interval Δt before reversing direction in (Figure 1) (b). Once the system comes to rest, the...
  10. T

    The coefficient of friction by spring compression

    Homework Statement A box has the mas 50.0Kg. The box slides on a horizontal surface that has friction. The box has the velocity 3.00m/s when its 0.600m away from a spring with negligible mass and the force coefficent 20Kn/m. The box hits the spring and comes to a momentary rest after...
  11. Philethan

    The period of the spring without ignoring its mass

    Homework Statement A block of mass M is connected to a spring of mass m and oscillates in simple harmonic motion on a horizontal, frictionless track. The force constant of the spring is k and the equilibrium length is l. Assume that all portions of the spring oscillate in phase and that the...
  12. L

    Understanding Force of a Spring: Restoring Force vs Applied Force Explained

    So if I have a block of mass connected to a spring with spring constant k. If I pull the spring with force F, what is the force that is pulling the block? Is it F or the restoring force of the spring? I think it should be the restoring force of the spring, but if it is F, why is it so?
  13. _N3WTON_

    Kinetics: Two Blocks and a Spring

    Homework Statement Suppose a block of Uranium and a block of Radium, both with edge length \lambda , are pushed to the head of an un-stretched spring (spring constant k , un-stretched length \delta _0 ). The combination, pushed \delta farther, compresses the spring. Upon release, the...
  14. hdp12

    Problem Check: Equilibrium of Particles

    Homework Statement A continuous cable of total length 4 m is wrapped around the small pulleys at A, B, C, D. If each spring is stretched 300 mm, determine the mass m of each block. Neglect the weight of the pulleys and cords. The springs are unstretched when d=2 m. The Attempt at a Solution I...
  15. M

    Rotational Spring Arbitrary Motion

    What I want to do is model the rotational behaviour of two bodies (1 and 2). They are connected by three virtual rotational springs (representing a link between them). For a normal (translational) spring the forces on body 1 in X, Y, and Z would be easily calculated as: $$ \mathbf{F}_1 =...
  16. R

    Calculate Force Needed to Stretch Spring 48cm: 270 N/m

    Homework Statement What force is necessary to stretch a spring 48 cm, if the spring constant is 270 N/m? Homework Equations 1/2kx^2 The Attempt at a Solution tried plugging everything into equation and got 31 but it is wrong. Any help would be greatly appreciated
  17. S

    Does Initial Spring Tension Affect SHM Frequency?

    Find the spring constant by timing simple harmonic motion. I have done a Hooke's law experiment already and found out about initial tension. What I learned was: force ≠ spring constant x displacement force = initial tension + (spring constant x displacement) So using F=kx would not give an...
  18. K

    High school physics problem involving a spring slingshot

    Homework Statement For a grade 12 physics project we have to stretch a spring along an inclined plane and then let go so that it hits a target. I know the mass of the spring, the angle of the incline, the height of the incline (how high the front of the spring would be off the ground before...
  19. F

    Understanding the Effective Spring Constant

    Homework Statement For the following arrangement of two springs, determine the effective spring constant, keff. This is the force constant of a single spring that would produce the same force on the block as the pair of springs shown for this case. (Spring 1 is attached to Spring 2 which is...
  20. L

    Blocks attached with spring is released from rest

    1. Consider the situation shown in figure. Initially the spring is unstretched when the system is released from rest. Assuming no friction in the pulley, find the maximum elongation of the spring. https://drive.google.com/file/d/0B3FvaDRwJ2neQWtBU3JrazVTeEU/view?usp=sharing Homework...
  21. Y

    Phase space diagram for a spring in simple harmonic motion

    Homework Statement A mass m = 750 g is connected to a spring with spring constant k = 1.5 N/m. At t = 0 the mass is set into simple harmonic motion (no damping) with the initial conditions represented by the point P in the phase space diagram at the right. **(This phase space diagram has...
  22. AdityaDev

    How does the separation between block and spring affect the time period?

    Homework Statement a block of mass m as shown in figure lies on a smooth horizontal surface and springs are at natural length. when the block is displaced slightly then find the time period of oscillation Homework Equations $$T=2\pi\sqrt{\frac{m}{k}}$$ for series connection of...
  23. hdp12

    What is the weight of block D in this equilibrium of particles problem?

    Homework Statement Here is the problem that I am stuck on in my mechanics class. https://lh4.googleusercontent.com/ygXVjNfI4iP8xVpEjhxXZlWlDqg_VrM2gCVFLyomOVwWCfcLU78mIcPEc7hEzUqBoACIiQ=w1210-h506 Homework Equations F=-kx The Attempt at a Solution See the attached picture of my work...
  24. T

    Mass on a Spring: Determine Periodic Time, Frequency & Acceleration

    Homework Statement A spring has a stiffness of 30 KN/m and supports a mass of 8 kg. The mass is pulled so that the spring t extends by amplitude of 10 mm and its released so that it produces linear oscillations . Homework Equations (i) Determine the periodic time,circular frequency,and the...
  25. H

    Maximum separation between blocks on spring

    Homework Statement Two blocks, each of mass m, are connected on a frictionless horizontal table by a spring of force constant k and equilibrium length L. Find the maximum and minimum separation between the two blocks in terms of their maximum speed, vmax, relative to the table. (The two blocks...
  26. A

    SHM Question: What is the maximum extension of the spring?

    Homework Statement A 50g block is attached to a vertical spring whose stiffness constant is 9N/m. The block is released at the position where the spring is unextended. What is the maximum extension of the spring? How long does it take the block to reach the lowest point? Homework Equations...
  27. H

    Does buoyancy affect the extension of a real spring?

    In Hooke's law, F=-kx. Assume that a mass is hung from the end of an ideal massless spring, the spring stretches a distance of x. However, in real life the spring has mass and it is submerged in a "fluid" of air. Compared to an ideal spring, would the real spring have a slightly different...
  28. R

    Phasor representation for a mass and spring

    Hi, While writing the Fourier representation for the spring-mass system, we have the equation: (-jωm+B-S/jω).U(jω)=F(jω) with F,U,m,B and S being the force, velocity,mass, damping coefficient and spring constant respectively. From this equation, is it right to infer that : 1) Force lags the...
  29. M

    Using a bearing to replace a spring?

    I am working on a project that uses a box design with a base. The base has two through holes on the the outer edges that will be used to slide up and down with in the box. The box will support two guide rods where the base can slide up and down. My intention was to use springs so that as...
  30. P

    Weighing with A 400 N Scale and 80 N Spring Dynamometer

    Homework Statement A former student of mechanics wishes to weigh himself but has access only to a scale A with capacity limited to 400 N and a small 80 N spring dynamometer B. With the rig shown he discovers that when he exerts a pull on the rope so that B registers 76 N, the scale A reads 268...
  31. J

    Netforce of spring, hookes law. help

    Homework Statement An "extreme" pogo stick utilizies a spring whose uncompressed length is 46 cm and whose force constant is 1.4 x 10^4 N/m (14000). A 60 kg enthusiast is jumping on the pogo stick, compressing the spring to a length of only 5.0 cm at the bottom of her jump, Calculate; a) The...
  32. PhilEWCC

    Find velocity of a cart using a spring at an angle

    I have to find the velocity of the cart when it lands right under the spring at 90 degrees. The spring is at an angle. I am not getting the right numbers though, can anyone help? This is my first post here BTW. This community looks awesome! 2. Equations You can use anything, but I used both...
  33. Poetria

    Acceleration of a Falling Bowling Ball: Effects of Rope Cutting

    Homework Statement You suspend a bowling ball of mass m using a spring and a rope. The spring is horizontal and has spring constant k; the rope makes an angle θ with the vertical. Answer all parts in terms of m, g, k, and θ. a) What is the tension T in the rope? b) Your arch nemesis cuts...
  34. J

    Finding spring constant from a graph

    Assume a spring with a mass attached is oscillating. Can i find spring constant from force/time and position/time graph using mgh=1/2kx^2? The force in force/time graph is collected from force meter attached at the top of the spring. The positin in position/time graph is the distance of the mass...
  35. karter

    Testing Spring Force in Machine Movement

    Hi, We have been trying to make a machine that tests springs. ( a simple drawing is attached ) We place the spring between two points. The top point has an s-type loadcell attached to get the force data. The initial size of the spring is 150 mm's. (L0 size) For the experiment we stretch the...
  36. Rmehtany

    Spring Angular Momentum Problem

    Homework Statement Homework Equations PE spring = .5 kx^2 KE rotation = .5 I w^2 The Attempt at a Solution I tried to do a conservation of energy (Note: I = moment of inertia, L = length) 3*.5*k L^2 = .5 I w^2 I =3 M R^2 ---> a^2 = b^2 + c^2 -2bc cos(a) (the reason why I am using law of...
  37. H

    K.E. and P.E. in a Pendulum and Spring

    Can anyone explain the conversion of K.E and P.E during compression and expansion of spring and during the motion of pendulum ?
  38. B

    Ballistic Spring System Problem

    Homework Statement A 10.1 g bullet is fired horizontally into a 44.1 g wooden block that is initially at rest on a rough horizontal surface and connected to a massless spring of constant 97.8 N/m. If the bullet-block system compresses the spring by 0.441 m, what was the speed of the bullet just...
  39. M

    Lift capacity of a spring loaded arm

    Hello all, Yet another problem on engineering mechanics. This time I have a spring loaded; counterpoised arm: Something like this- http://www.akwmedical.com/files/imagecache/cart/SK2323_1.jpg http://t3.gstatic.com/images?q=tbn:ANd9GcTUCvnSKhKEbs4uNiOLg2TGU3p0quUrSp8Uh4QXqt5m4eIEf6_ISA What it...
  40. Jameson

    MHB What courses are you taking, Spring 2015 edition

    Now that the new year has begun, I am excited to see more people popping in with their questions. If you are a student or teacher, what classes will you be involved in this semester? I am a current graduate student of statistics, taking 3 courses. Non-parametric modeling, applied matrix...
  41. Thom Stoops

    Need Help Designing Mechanism for Automatic Spring Return

    I'm trying to design an entirely mechanical system for returning an extension spring to its extended state, without the assistance of electronics, pneumatics, hydraulics or any other form of auxiliary power. It's for a soft exosuit concept that simply enhances the speed and ease of walking or...
  42. S

    Calculate energy of vertical oscillating spring

    Problem statement: An oscillating mass is hung from a vertical spring. Take the potential energy of the system when the spring is at the unstretched length to be zero for both spring and gravity. Calculate the gravitational potential energy, spring potential energy, and total potential energy...
  43. kannanraja

    Leaf spring alternative design

    to make leaf spring we can use any plastic materials ? what are strong plastics? please find it friends
  44. R

    An advanced two spring weighing machine

    Homework Statement A more sophisticated weighing machine contains two springs. The effect of these is that the machine is more sensitive to masses less than some fixed value M0 than it is to greater masses. The equilibrium displacement is alpha1*M when M<M0, and (alpha2+c) when M≥M0 , where...
  45. Asim Riaz

    How Should Damping Characteristics Be Designed for a Plane Landing System?

    Homework Statement If an aeroplane of a mass of = 5000 with a velocity of ̇ = 500/ℎ has to land on a daily basis what would be your design characteristic of a damping system to absorb the ground energy contact within 5 seconds. Hint: Your answers may include: i. The values of k (the spring...
  46. A

    Understanding Dual Mass Spring System: Relating Acceleration and Oscillations

    Dear members I'am stuck in Dual mass spring system. How do we relate acceleration of masses when they are are oscillating relatively with let say amplitudes x1 and x2? Is there any simpler approach available please let me know.thanks.
  47. H

    Solve Box-Spring Problem: Setup Differential Equation

    Homework Statement Have to boxes on a frictionless surface, connected with a massless spring with unstrecht length L and spring constant k. The boxes have mass m1 and m2 and ca be regarded as point masses. The two variables x1 and x2 is the position of the boxes at the location where the...
  48. Q

    Physics Problem with Spring Constant and Kinetic Friction

    Homework Statement A person attaches a spring to an cubic object that weighs 36kg and pulls this object along a table made of material X horizontally with a steady speed of 1.3m/s. The spring stretches a distance of 3.4cm. Find the ratio of the spring constant to the kinetic friction...
  49. Z

    Force of tension of spring and rope

    why is the tension force of spring conservative and tension force of rope not conservative ??
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