Springs Definition and 651 Threads

my question is: is there a way to find the work done to a spring when the only variable given is the distance (x)?? Homework Statement For the pressure gauge, what work is done by the air on the spring? Homework Equations W = 1/2kx2 Fx = kx The Attempt at a Solution I can't...

Homework Statement A mass M_1 is suspended by a spring with constant k_1. A second mass M_2 is suspended from the first by a spring with constant k_2. The equilibrium height of the first is y_1 and the equilibrium height of the second is y_2. I just want to write down the Lagrangian for...

Springs and... mass?? A spring with a force constant of 2.1 x 10^4 N/m compresses 0.035m when stepped on by a boxer. The mass of the boxer is...? k = 2.1 x 10^4 N/m x = 0.035m how would you be able to find the mass for this?

Homework Statement A 0.450 kg object attached to a spring with a force constant of 8.00 N/m vibrates in simple harmonic motion with an amplitude of 11.0 cm. Calculate the maximum value (magnitude) of its speed and acceleration.[/B] The Attempt at a Solution I found both w and t...

[SOLVED] Springs, Normal Modes, and Center of Mass coordinates 1.) Problem The problem of the linear triatomic molecule can be reduced to one of two degrees of freedom by introducing coordinates y_{1} = x_{2} - x_{1}, y_{2} = x_{3} - x_{2}, and eliminating x_{2} by requiring that the center...

Homework Statement A ball of mass 2.5kg is moving to the left along a smooth, horizontal table at 3.5m/s. An idea spring (one that obeys Hooke's Law) with a spring contstant of k=1100N/m, and a relaxed length of 0.3m, is attached to its front. It collides head on with a 4.5 kg ball, initially...

Based on the equation: 1/ktot = 1/k1 + 1/k2 Why is it that the reciprocal of the total spring force is equal to the reciprocals of each spring constants?? I know how to derive the equation, but what is the physics behind it?? The total spring constant is much less than those of the two...

Hello all, newbie here Google led me to this thread: https://www.physicsforums.com/showthread.php?t=70094" which happens to be basically my question. I am doing an investigation on Hooke's Law for my VCE Physics class (Australian year 12, senior school). Thanks to wikipedia's derivation...

How come both spring and rubber band are elastic whereas spring are contracted and rubber bands are stretched? I understand that elasticity of an object depends on it ability to reform from deform. I also get that spring works b/c of normal force(too much contraction...right?-being the reason...

Homework Statement Ok here it goes, we all know that 2 springs in series (k1, k2) can be expressed as one spring with spring constant k using the following equation. k=\frac{1}{\frac{1}{k_{1}}+\frac{1}{k_{2}}} The same holds for 2 dampers c1 and c2...

Homework Statement A rigid rod of mass m and length l is suspended from two identical springs of negligible mass such that one spring is attached at either end of the rod. The upper ends of the springs are fixed in place and the springs stretch a distance d under the weight of the suspended...

I use to wonder why beds have springs in them. Was it because it is better for the back? No , a springless bed with an ordinary mattress is better for the back? Then I realized what it's for... love making. Is this correct? Why else would you have springs in beds?

Homework Statement A 3 kg block collides with a massless spring of spring constant 99 N/m attached to a wall. The speed of the block was observed to be 1.5 m/s at the moment of collision. (3 of 3) Given: the coefficient of static friction between the floor and the block is .703416. Does...

Homework Statement In the figure below, we must apply a force of magnitude 89 N to hold the block stationary at x = -2.0 cm. From that position we then slowly move the block so that our force does +4.0 J of work on the spring-block system; the block is then again stationary. What is the...

Hi, I Need to know exactly how to solve this...I just can't take it anymore. The only reason I'm so into it now is because I don't get it. I promised my girlfriend I would help her and now she's annoyed because I get more into it than she does. But anyway, someone..PLEASE tell me what has to be...

Springs, Kinetic Friction, and Distance...help me please 1. In the figure below a 1.4 {\rm kg} block is held at rest against a spring with a force constant k = 740 {\rm N/m}. Initially, the spring is compressed a distance d. When the block is released, it slides across a surface that is...

A spring with spring constant k=340 N/m is used to weigh a 6.7 KG fish. How does the spring stretch? I used Hooke's law (F=-Kx), but ended up having a negtive distance x=-0.2m. Is this expected? in the problem they say the spring stretches...this is confusing me...thank you for your help guys...

[SOLVED] Maximum speed of object between 2 springs Homework Statement A 1.50 kg box moves back and forth on a horizontal frictionless surface between two different springs, as shown in the accompanying figure. The box is initially pressed against the stronger spring, compressing it 4.00 cm...

Greetings, Can you recommend a website or sites that has worked examples and discussion of harmonic motion with 2+ springs in various configurations? Thanks Sparky

Homework Statement Two springs, with force constants k1 and k2, are connected in series, as shown in the figure How much work is required to stretch this system a distance x from the equilibrium position? Homework Equations W=1/2kx^2 The Attempt at a Solution I have no idea how...

[SOLVED] Springs and Hooke's law Homework Statement An unstretched spring has a force constant of 1200 N/m. How large a force and how much work are required to stretch the spring by 1.00 m from its unstretched length? Homework Equations F= -k*s W= F * s The Attempt at a Solution...

Homework Statement The ball launcher in a pinball machine has a spring that has a constant of 1.2 N/cm. The surface on which the ball moves is inclined 10 degrees with respect to the horizontal. If the spring is initially compressed 5.0 cm, find the launching speed of a 100g ball when the...

Homework Statement This is from Advanced Physics by Adams and Allday. Spread 3.34, Q 3. A friction-free trolley of mass 2 kg is tethered to rigid supports at each end by two identical springs of spring constant 20 N/m each. The springs obey Hooke's law and remain in tension as the trolley...

Homework Statement For a mass m hung vertically from a spring with spring constant s, the restoring Force is F=-sx where x is the displacement from equilibrium. a)What are the periods of the two harmonic oscillators i) and ii). b)Assuming eaqch oscillator is moving with the same...

[SOLVED] Hooke's Law: Two springs in series [SIZE="4"]can someone explain and prove to me why the equation for two springs in series is K= [(1/k[SIZE="2"]1)+(1/k[SIZE="2"]2)]^-1 ? this is how far i got F= -k ∆x F= -k (x1+x2)

A massless spring is between a 1-kilogram mass and a 3-kilogram mass, but it is not attached to either mass. Both masses are on a horizontal frictionless table. In an experiment, the 1-kilogram mass is held in place, and the spring is compressed by pushing on the 3-kilogram mass. The 3-kilogram...

I have 2 problems that have been giving a bit of trouble since last night when I gave up on them. I found a similar one to the first one on here but I didn't quite understand the equation that was given. Homework Statement A student sits on a rotating stool holding two 3.0 kg objects. When his...

Homework Statement If the initial period is 3.0 s and the mass is reduced to 1/3 of its initial value, what is the new period?Homework Equations Possibly T=2pi*squareroot(m/k)The Attempt at a Solution The solution is something close to 1.73. I have no idea what equation to use, even. Any...

I'm trying to write a lab report but I cannot figure out how to derive the formulas for my Theories and Derivations section. Basically, the set-up was this: Two springs were attached to either ends of a dynamics cart. Each spring was then attached to a bumper at either end of the dynamics...

1. A 25.0g bullet strikes a .600kg block attached to a fixed horizontal spring whose spring constant is 6.70x10^3 and sets it into vibration with an amplitude of 21.5cm. What is the speed of the bullet before impact if the two objects move together after impact?2. V=A\sqrt{k/m} 3. I used the...

Homework Statement A block of mass M is resting on a horizontal, frictionless table and is attached as shown above to a relaxed spring of spring constant k. A second block of mass 2 M and initial speed v0 collides with and sticks to the first block. Develop expressions for the following...

1. A guy us riding a tricycle at 33kg at 12m/s when it strikes a spring and is brought to rest in 1.6m. Compute the proportionality constant and explain the type of energy, types of forces, and Hookes law applied 2. F = k(elongation) I am sure there are others. 3. my problem...

Blocks with light springs (q31) Hi, I have not idea how to do the following problem(all attempts failed): http://tinyurl.com/28lahv Can somebody help?

Homework Statement A 50 g ice cube can slide without friction up and down a 30 degree slope. The ice cube is pressed against a spring at the bottom of the slope, compressing the spring 10 cm. The spring constant is 25 N/m. When the ice cube is released, what total distance will it travel up...

Ok, this seems simple, and it probably is, but I'm just not seeing why I'm getting two non-equivalent solutions... Homework Statement "A massless platform is supported by 4 equal springs (same length, same spring constant, etc.) A mass m is placed on the center of the platform causing an...

I'm sure I must be being a bit dim here, but I can't work this out! I have a mass-spring-damper system, as shown in the attahed picture, in which i have a mass suspended between two springs and dampers, each of which are attached to a fixed surface. he two opposite surfaces are part of the...

Homework Statement A small block of mass m is pressed up against a spring. The spring has constant k and is compressed a distance x. The block slides along a track up and around a loop of radius r and down and out on the far side, as shown. At the top of the loop, the loop exerts a...

Homework Statement A spring with k = 40.0 N/m is at the base of a frictionless 30.0° inclined plane. A 0.50 kg object is pressed against the spring, compressing it 0.4 m from its equilibrium position. The object is then released. If the object is not attached to the spring, how far up the...

can someone explain to me how springs work? I already know the equation of elastic pe= 1/2kx^2 but I need more explanation! how come when a mass is dropped from a hanging spring I can multiply the mass by 9.8m/s^2 to get the force, then divide the answer by the spring's constant (20n/cm) then...

Homework Statement A 8000 kg freight car rolls along rails with negligible friction. The car is brought to rest by a combination of two coiled springs as illustrated in the figure below. Both springs are described by Hooke's law with k1 = 1600 N/m and k2 = 3000 N/m. After the first spring...

Homework Statement Determine the natural frequency of the system in the figure (attached). Assume the pulleys are frictionless and are of negligible mass. Homework Equations k_eq=k_1+k_2 (springs connected in parallel) k_eq=(1/k_1)+(1/k_2) (springs connected in series) omega=sqrt(k/m)...

a 52 N backpack is laying on a table with a spring attached to one side of it where force is applied and the spring stretches. The backpack begins to slide when the spring (k= 150 N/m) stretches by 2.50 cm. What is the coefficient of static friction between the backpack and the table? i set...

[SOLVED] Simple Harmonic Motion Homework Statement A mass rests on a frictionless horizontal table and is connected to rigid supports via 2 identical springs (which obey Hooke's law). Each spring is stretched to a length (l) considerably greater than its rest length. At rest, the mass is...

Homework Statement A 10kg mass, attached by means of two springs to the ceiling, is held against the floor and is then released. How fast will it be traveling when it hits the ceiling? The spring constant of each spring is 80 N/m, and each spring has an unstretched length of 1 m. Assume that...

Homework Statement A mass 'm' is attached to the free end of a spring (unstretched = l) of spring constant 'k' and suspended vertically from ceiling. The spring stretches by Δl under the load andd comes to equilibrium position. The mass is pushed up vertically by "A" from its equilibrium...

Homework Statement A 2.0 kg package is released on a 53.1◦ incline, 4.0 m from a long spring with force constant 120 N/m that is attached at the bottom of the incline. The coefficient of friction between the package and the incline are µs=0.40 and µk=0.20. The mass of the spring is...

Homework Statement hey, this is my first time using this forum and was wondering if i could have some help with this normal modes question. suspended from a ceiling is in order: a spring of spring constant (k_{2}), a mass (m), a spring with spring constant (k_{1}), and another mass (m)...

Homework Statement In the parallel spring system, the springs are positioned so that the 30 N weight stretches each spring equally. The spring constant for the left hand spring is 3.2 N/cm and the spring constant for the right-hand spring is 6.6 N/cm. The diagram is basically 2 springs...

Homework Statement A cart of mass M rides on four frictionlesly mounted wheels of radius a and mass m'. The top of the cart is sloped at an angle alpha horizontally and a mass m is suspended from the top of the slope of force constant k. m slides without friction up or down the slope. a)...

Does anyone have any idea why applied force is plotted on the vertical axis of the graph even though it is an independant variable?