Table of Contents

- 1 Does spring constant change with compression?
- 2 What is the spring constant of a spring that needs a force of 3 N to be compressed from 40 cm to 35 cm?
- 3 How much force is required to compress a spring?
- 4 What does F =- KX stand for?
- 5 Does Hooke’s law apply to Springs?
- 6 Under what conditions can a spring be described as elastic?
- 7 How to calculate the spring constant using Hooke’s law?
- 8 How do you calculate the force acting on a spring?

## Does spring constant change with compression?

The proportional constant k is called the spring constant. When a spring is stretched or compressed, so that its length changes by an amount x from its equilibrium length, then it exerts a force F = -kx in a direction towards its equilibrium position.

## What is the spring constant of a spring that needs a force of 3 N to be compressed from 40 cm to 35 cm?

F = k Δx = 100 N / m × 0.01 m = 1 N Page 9 Practice Problem #2 What is the spring constant of a spring that needs a force of 3 N to be compressed from 40 cm to 35 cm? The spring changes from a length of 40 cm to 35 cm, hence it compresses 40 cm – 35 cm = 5 cm Δx = 5 cm = 0.05 m.

**How much force is needed to pull a spring with a spring constant of 20 N m at a distance of 25 cm illustrate and show the solution?**

Answer: A force of 5 Newtons is needed to pull this spring a distance of 25 cm.

**How do you know if something obeys Hooke’s Law?**

If you look at a graph of the equation, you’ll see a straight line, or a linear rate of change for the force. Because of this trait, springs that obey Hooke’s law fall into the category of “linear force” springs. The spring constant determines exactly how much force will be required to deform a spring.

### How much force is required to compress a spring?

Hooke’s law says F(x) = kx where k is a constant for that spring, and F(x) is the force necessary to keep the spring stretched (or compressed) x units beyond (or short of) its natural length. EX 1 A force of 6 lbs is required to keep a spring stretched 1/2 ft beyond its normal length.

### What does F =- KX stand for?

F=−kx. where: x is the displacement of the spring’s end from its equilibrium position (a distance, in SI units: meters); F is the restoring force exerted by the spring on that end (in SI units: N or kg·m/s2); and. k is a constant called the rate or spring constant (in SI units: N/m or kg/s2).

**What force is needed to compress the spring this distance?**

**What is the spring constant k in Hooke’s Law?**

Mathematically, Hooke’s Law can be written as F=-kx. Many materials obey this law as long as the load does not exceed the material’s elastic limit. The rate or spring constant, k, relates the force to the extension in SI units: N/m or kg/s2.

#### Does Hooke’s law apply to Springs?

An elastic body or material for which this equation can be assumed is said to be linear-elastic or Hookean. Hooke’s law is only a first-order linear approximation to the real response of springs and other elastic bodies to applied forces.

#### Under what conditions can a spring be described as elastic?

A spring is an example of an elastic object – when stretched, it exerts a restoring force which tends to bring it back to its original length. This restoring force is generally proportional to the amount of stretch, as described by Hooke’s Law.

**What is the spring constant of a spring?**

A spring constant is a variable used in physics to describe the force per unit of distance a spring will resist or apply to an object. In other words, it’s a measure of how stiff a spring is; the higher the constant the stiffer the spring. Can the spring constant change?

**How do you calculate displacement of a spring?**

Displacement can be positive if the spring is being pulled in tension, or negative if the spring is being compressed. How to calculate a spring constant? To do this, we simply divide both sides by -x. This yields the equation k = -F/x. In this case, we will first measure the force acting on the spring.

## How to calculate the spring constant using Hooke’s law?

Calculate the spring constant of a spring using Hooke’s Law. Enter the spring displacement and force on the spring to calculate the spring constant. (Also known is spring rate calculator)

## How do you calculate the force acting on a spring?

This yields the equation k = -F/x. In this case, we will first measure the force acting on the spring. In most spring applications this is done directly via a gauge. Sometimes it’s also provided in a problem.