# Questions tagged [spring]

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

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### Question based on conductors [closed]

A conducting sphere of radius R is cut into two equal halves which are held pressed together by a stiff spring inside the sphere. Find the change in tension in the spring corresponding to the maximum ...
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### Two Block and spring system falling from a height [closed]

A spring with two blocks of equal mass attached at both sides is made to fall freely under gravity. What is the final length of the spring when the system hits the ground vertically? If we take into ...
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### Maximum force on a spring [closed]

Work $W$ is done to extend a spring beyond its natural length by a small distance $x$. Assuming a spring constant of $1$, what is the magnitude of the maximum force done by the person stretching the ...
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### Two blocks attached at either side of spring [closed]

A spring with two blocks of equal mass attached at both sides is made to fall freely under gravity. What is the final length of spring when system hits the ground vertically?
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### Mechanical energy conservation for different chosen systems

I studied work-energy theorem and the equation for mechanical energy conservation yesterday. I’m not able to understand how to identify forces when choosing a system (which force is which). This is ...
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### Collision between 2 springs [closed]

Four material points, all of mass m, are aligned along a straight line and connected two by two by two equal springs, of elastic constant k and rest length $l_\epsilon$. The points are subject only to ...
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### Potential energy of a spring vs potential energy of the spring-mass system

What is the difference between potential energy of a spring and potential energy of the spring-mass system? The reason I am asking this question is, is elastic potential energy a property of the ...
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### Driven harmonic oscillator: driving constant force is only temporary

Example: Let $m$ be a point mass that hangs at the equilibrium point $y_0$ on a spring fixed at the end. No damping force acts on the particle. Let $k$ be the spring constant. If I want to calculate ...
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### Bungee jumping: why does using the law of conservation of energy give me a different $k$ than solving for $k$ when the net force is 0? [closed]

I tried solving the following problem: "A 62.0kg bungee jumper jumps from a bridge. She is tied to a bungee cord whose unstretched length is 12.0m and falls a total of 31m. Calculate the spring ...
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### Force exerted by ideal spring in our hand

Suppose we have an ideal spring. We push the spring with our hand in the $x$ direction (so we don't need to take account gravity) exerting a force $-F_{h}$. From Newton's third law the spring exert to ...
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### Work done by action-reaction pair of tension

Work done by action-reaction pair of tension force on a system is zero if the string is inextensible I am trying to understand this statement taking the following arrangement in consideration. Here, ...
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### Can the axial stiffness of a block or thick plate be idealized as an axial spring?

This is somewhat of a follow on question related to my previous post (not sure if creating a new post was the correct way to do this, I'm new). Anyway, I'm dropping a heavy mass onto a "pad", or ...
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### How many $g$'s does a mass see as it impacts and compresses a spring?

Essentially, I'm designing a drop test, and to simplify my problem I've modeled the system as a known mass $m$ being dropped from a set height $h$ onto a spring (set $k$), compressing it ($x$). How ...
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### Inconsistencies in Vertical Spring [duplicate]

If I attempt to find the displacement $x$, from equilibrium when a mass, $M$ is attached to an upside down vertical spring with spring constant $k$ I get two different answers when I use energy ...
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### What happens at the molecular level when a spring is being extended? [duplicate]

To my knowledge, at the point when a spring is being extended until the bottom of it is stationary, the electrostatic forces of attraction between the molecules in the spring balance out with the ...
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### Work done by a spring on a block

A spring has a block attached to one end and the other end is attached to a wall. As the ball is displaced right or left, we know spring force $F_{sp}$ $=$ $-kx$, always in the direction opposite to ...