# What is k in hooke’s law

## What is the spring constant k?

Hooke’s Law: Calculating Spring Constants. … k is the spring constant, in Newtons per meter (N/m), and x is the displacement of the spring from its equilibrium position. The spring constant, k, is representative of how stiff the spring is. Stiffer (more difficult to stretch) springs have higher spring constants.

spring constant

## What is K in the formula for Hooke’s law for springs?

An ideal spring obeys Hooke’s law, F = -kx. Details of the calculation: k = |F/x| = (0.1 N)/ (0.035 m) = 2.85 N/m.

## Why is K negative in Hooke’s Law?

Physics I For Dummies, 2nd Edition

The force exerted by a spring is called a restoring force; it always acts to restore the spring toward equilibrium. In Hooke’s law, the negative sign on the spring’s force means that the force exerted by the spring opposes the spring’s displacement.

## How do you find the spring constant k?

W = kx. W is the weight of the added mass. Therefore, the spring constant k is the slope of the straight line W versus x plot. Weight is mass times the acceleration of gravity or W = mg where g is about 980 cm/sec2.

## What happens if the spring constant increases?

A stronger spring-with a larger value of k-will move the same mass more quickly for a smaller period. As the spring constant k increases, the period decreases. … For a given mass, that means a greater acceleration so the mass will move faster and, therefore, complete its motion quicker or in a shorter period.

## How do you find k in Hooke’s Law?

Mathematically, F∝x, where F is the force applied, and x is the extension or compression of the object (usually in metres). Now, F = – kx, where k is the constant of proportionality called the spring constant.

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## Where is Hooke’s law used?

For this reason, Hooke’s law is extensively used in all branches of science and engineering, and is the foundation of many disciplines such as seismology, molecular mechanics and acoustics. It is also the fundamental principle behind the spring scale, the manometer, and the balance wheel of the mechanical clock.

## What is Hooke’s Law simple definition?

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 does F KX mean?

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).

## Why is Hooke’s law important?

Hooke’s Law, by Doodle Science, on youtube.com

Hookes law is important because it helps us understand how a stretchy object will behave when it is stretched or compacted. … The main component of car shocks are springs, and understanding how the spring will behave (using hookes law) is ideal for enhancing the technology.

## What is the formula for work done?

The work is calculated by multiplying the force by the amount of movement of an object (W = F * d). A force of 10 newtons, that moves an object 3 meters, does 30 n-m of work. A newton-meter is the same thing as a joule, so the units for work are the same as those for energy – joules.

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## Why is there a negative in F =- KX?

where the minus sign shows that this force is in the opposite direction of the force that’s stretching or compressing the spring. … In Hooke’s law, the negative sign on the spring’s force means that the force exerted by the spring opposes the spring’s displacement.

## How Hooke’s law works?

Hooke’s Law is a principle of physics that states that the that the force needed to extend or compress a spring by some distance is proportional to that distance. … Understood in terms of Hooke’s Law, this restoring force is generally proportional to the amount of “stretch” experienced.