# Questions tagged [spring]

An object such as a metal coil or air-filled tube which provides a force opposing the direction of deformation.

1,332 questions
Filter by
Sorted by
Tagged with
27 views

### Falling Blocks and Forces [closed]

After discussing this problem with multiple others, I've heard tons of different answers. I understand the explanations for both A and D. I've found differing sources on the web for this question as ...
21 views

### Potential energy curve for spring attached to pulley [closed]

Assume a block of mass $m$ is held in place and is attached by a pulley to spring with constant $k$ at equilibrium attached to the ground. The mass of the pulley and spring is negligible. What would a ...
32 views

### Pulley and spring block system conservation of energy [closed]

Given that ℎ = 0.25 m. When the system is released from rest, determine if block C will hit the ground. Explain your answer. The solution given does not factor in the kinetic rotational energy of the ...
1 vote
66 views

### Forces on spring, Newtons third law [closed]

I'm trying to understand how Newton's third law works with springs. If we hang a block on an ideal spring mounted to the ceiling, in equilibrium, the block is affected by gravity downwards and the ...
44 views

### Question with work and Spring

Hey so im currently going through questions and I've become confused on this question. I was able to get an answer a different way, finding the x value by equating F = kx and solving for x, and then ...
39 views

### Combing two non-linear forces

Imagine a permanent magnet suspended in the air with an iron disc below it. Inbetween these a thick aluminium barrier. Attached to the disc at an angle is an air spring (or air shock). The magnet ...
29 views

### Using Galilean transformation to solve a question with a block-spring-block system [closed]

I am currently practicing for my PHYS 101 major test and encountered this question: In Figure 11, block 1 (mass 2.50 kg) is moving rightward at 10.0 m/s and block 2 (mass 6.20 kg) is moving rightward ...
44 views

49 views

### Does Elastic Potential exist?

In gravitation, we have gravitational potential energy U and gravitational potential Φ where: $$Φ = \frac{U}{m}$$ In electrostatics, we have this instead: $$Φ = \frac{U}{q}$$ In a spring-mass system, ...
14 views

### What is the difference when a block attached to the spring is lowered slowly in vertical direction and when it is released suddenly? [duplicate]

Friction is not considered in any case and I would like to know why the extension in the spring when released slowly is $mg/k$ where as in suddenly released it is $2mg/k$. Can you prove these cases ...
96 views

### Lagrangian function of a mass-spring-system with deflections in 2D

I’m looking for the lagrangian function of the following problem (as seen in the picture). We have a mass connected to two springs. We can deglect the mass in two dimensions. My main problems are: ...
1 vote
88 views

### Spring constant of typical flute style champagne glass?

I am a high school student doing a lab report on the relationship between height and resonance frequency of champagne glasses, using the "singing glasses" method where you rub your finger ...
2k views

### Why is the Work on a Spring Independent of Applied Force?

Why is the work done on a spring independent of the amount of applied force acting on it? Why does it only depend on the spring constant and the amount of stretch or compression? For example: $k=2$ N/...
21 views

### Vibrational Modes and Centers of Torque

This is addendum to the question: Vibrational Modes and Imaginary Frequencies of a Three Spring System. After performing NASTRAN analysis on this problem, it appears that I was incorrect in my ...
1 vote
99 views

### Vibrational Modes and Imaginary Frequencies of a Three Spring System

This question is an extension of the one I posted a few days ago: Rigid Body and Two-Spring System and the Lagrangian. I am attempting to find the vibrational modes and their frequencies of an ...
133 views

### How to find particular solution to this system of two masses connected by a spring with constant applied forces? Does an analytic solution exist?

This question comes from review I'm doing on my own, so it's not any homework question. I thought this question would be easy to solve, but I seem to be stuck and I am having second thoughts, so I'm ...
1 vote
38 views

### Finding the equation of motion from diagram [closed]

Friction, and initial values of functions can be ignored. $x(t)$ and $y(t)$ stands for the horizontal displacement and $f(t)$ is the force working on mass $M$. $K_1, K_2$ are the coefficient for ...
85 views

A block of mass $m$ is placed against an ideal spring as shown. Initially the spring (of force constant $k$) is compressed by a distance $s$. The block is then released and slides a distance d up the $... 2 votes 4 answers 140 views ### Elastic Potential Energy of spring Suppose I stretch an ideal spring by distance$x$then we know that the potential energy stored in the spring during elongation is$kx^2/2$. Now if I leave the spring it returns back to its natural ... -3 votes 1 answer 68 views ### Why Doesn't the Amount of Work Determine the Elastic Potential Energy in Springs and Gravitational Potential Energy? [closed] Why isn't the amount of work done on the spring the determining factor for the amount of elastic potential energy stored in a spring? I learned that the change in potential energy is a result of the ... 0 votes 0 answers 161 views ### Rigid Body and Two-Spring System and the Lagrangian Suppose I had a$2D$beam with a spring placed on either end of the beam. The spring constants would are$k_1$and$k_2$, the distance between the left spring and the COM is$d_1$and the the distance ... 0 votes 1 answer 28 views ### (Taking Different Reference Points Give Different Conclusion) Approximation for Single Spring Pendulum Please refer to this post: Approximations for a spring pendulum's equations of motion in 2D I am doing the same approximation, by letting $$\theta \rightarrow \epsilon \theta$$$$a \rightarrow \... 0 votes 1 answer 46 views ### Question about a bungee jump problem relating weight to spring constant [closed] In the following solution to the bungee jump problem below there is a part that I don't understand. In the middle it says that we can eliminate the weight$mg$from the fact that the rope extended ... 1 vote 1 answer 55 views ### Equation of motion for a driven mechanical oscillator I'm trying to derive the differential equation for a driven horizontal mechanical oscillator. If I suppose that a spring is fixed at one end and attached to a solid at the other end and that the solid ... 0 votes 0 answers 56 views ### Approximation for spring pendulum In this post, Approximations for a spring pendulum's equations of motion in 2D I get the most of it, but the simple one. I don't quite understand why we can approximate$l+a \sim l$Without the ... 0 votes 2 answers 65 views ### In order to determine spring constant of a vertical spring why don’t we use$mg=kx$? [closed] Why don’t we apply$mg=kx$instead of using the law of energy conservation to determine the value of spring constant? 4 votes 1 answer 113 views ### What is the role of fictitious force in simple harmonic motion? While I was searching about simple harmonic motion, Wikipedia defined it as, "In mechanics and physics, simple harmonic motion (sometimes abbreviated SHM) is a special type of periodic motion of ... 0 votes 2 answers 135 views ### Why must the spring forces of springs in series be equal? I was learning about two springs in series connected to a wall on one side, and a block of mass m on the other. Model: WALL -- Spring 1 -- Spring 2 -- mass They say that the force on the mass,$F_m = -... 171 views

### How do you calculate the time taken in a collision?

For example a car with a known speed and mass crashes with a completely unyielding wall. The car has a crumple zone, (and you know the modulus of the crumple zone) so it doesn't stop immediately, but ...
279 views

### Non-linear spring systems

I've recently been re-learning some physics, and a question came to me when looking over Hooke's law: In the following I am always assuming that the force required for permanent deformation is ...
110 views

### What are the forces that do work when a spring between two masses pulls inwards?

Two masses (indicated as 1 and 2) of value $m$ are connected by a spring with an elastic constant $k$ and a natural length $l_0 = 0$, as shown in the figure. Initially, the two masses are separated ...
118 views

### Why both 'Newton's Second law' and 'Conservation of Energy' applied to the same problem lead to two distinct answers?

A block of mass 'm' is attached to one end of a string and a floor-fixed spring with spring constant 'k' is attached to the other. The string goes over a frictionless pulley. Initially, the spring is ...
20 views

### Probability of overlap of two isolated harmonically bound penetrating spheres of diameter $d$ at an average separation $a$

Consider I have an Einstein crystal with spheres residing at simple cubic lattice points with lattice constant $a$. Each sphere has diameter $d$. Each sphere is connected with it's lattice site with ...
So I was solving a question that is based on Simple Harmonic Motion. The question is as follows: There is a spring of spring constant $k$ and natural length $2a$ (it is in its natural length initially)...