**Extension Spring**:

**Extension springs**, also known as a tension

**spring**, are helical wound coils, wrapped tightly together to create tension. The function of an

**extension spring**is to provide extended force when the

**spring**is pulled apart from its original length.

**What is Hooke's Law Year 7?** Year 7 investigate Hooke's Law. Year 7 had a fascinating lesson in Physics experimenting on Hooke's Law which states that the force needed to extend or compress a spring by some distance is proportional to that distance.

## what is the extension of a stretched spring?

The**extension**of a material or a

**spring**is its increase in length when pulled. Hooke's Law says that the

**extension**of an elastic object is directly proportional to the force applied to it. In other words: if the force applied is doubled, the

**extension**doubles.

**What is force constant of a spring?** Hooke's law states that the force needed to compress or extend a spring is directly proportional to the distance you stretch it. As an equation, Hooke's law can be represented as F = kx, where F is the force we apply, k is the spring constant, and x is the extension of the material (typically in meters).

## what does F Ke mean?

Note: Because the force acting on the spring (or any object), causes stretching; it is sometimes called tension or tensile force. This shows that Force is proportional to extension. This is Hooke's law. It **can** be written as: **F** = **ke**.

**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 is the formula for extension?

Hooke's Law states that the **force** needed to compress or extend a spring is directly proportional to the **distance** you stretch it. As an equation, Hooke's Law can be represented as F = kx, where F is the **force** we apply, k is the spring **constant**, and x is the extension of the material (typically in meters).

**What is spring constant?** spring-constant. Noun. (plural spring constants) (physics) A characteristic of a spring which is defined as the ratio of the force affecting the spring to the displacement caused by it.

### What is Hooke's law of elasticity?

**Hooke's law**, **law of elasticity** discovered by the English scientist Robert **Hooke** in 1660, which states that, for relatively small deformations of an object, the displacement or size of the deformation is directly proportional to the deforming force or load.

**What is Hooke's Law BBC?** When an object, such as a spring, is stretched, the increased length is called its extension. Hooke's law: The extension of a spring is directly proportional to the force applied, provided that the limit of proportionality is not exceeded.

### What is a force constant?

Force constant mainly means spring constant in physics, which ultimately refers to Hooke's law. Hooke's law is a principle of physics that states that the force (F) needed to extend or compress a spring by some distance X is proportional to that distance.

### Why is a spring elastic?

A spring is an elastic object that stores mechanical energy. When a conventional spring, without stiffness variability features, is compressed or stretched from its resting position, it exerts an opposing force approximately proportional to its change in length (this approximation breaks down for larger deflections).

### What happens when a spring is stretched?

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. The force a spring exerts is a restoring force, it acts to restore the spring to its equilibrium length.

### What is Hooke's Law simple?

It is a law of mechanics and physics discovered by Robert Hooke. This theory of elasticity says the extension of a spring is proportional to the load applied to it. Many materials obey this law as long as the load does not exceed the material's elastic limit.

### What is elastic behavior?

Elastic Behaviour Of Materials It deforms but regains its original shape when you stop applying a force. Elasticity is the ability of a body to resist any permanent change to it when stress is applied. When stress application ceases, the body regains its original shape and size.

#### How do you test for Hooke's Law?

You can investigate Hooke's Law by measuring how much known forces stretch a spring. A convenient way to apply a precisely-known force is to let the weight of a known mass be the force used to stretch the spring. The force can be calculated from W = mg.

#### What is the unit for extension?

The extension of an elastic object, such as a spring, is described by Hooke's law: force = spring constant × extension. This is when: force (F) is measured in newtons (N) spring constant (k) is measured in newtons per metre (N/m)

#### What is stress formula?

Stress is denoted by σ. It is represented as N/m2. Stress formula is made use of to find stress applied on any given body if force and area on which force is exerted is given in the problem. Underneath are problems based on stress which may be useful for you.