# Consider a spring with spring constant of 65 N/m and unstretched length of 20 cm. Determine the...

## Question:

Consider a spring with spring constant of 65 N/m and unstretched length of 20 cm. Determine the amount of weight which pulls on the spring if it is stretched to 40 cm.

## Hooke's Law:

Hooke's law is a physical law describing how a spring or any elastic materials stretch if an external force is applied. This law states that the restoring force of the spring is given by the negative product of the spring constant and the extension.

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Here we use the formula for Hooke's law which is given by

{eq}\displaystyle F = -kx {/eq}

where

• {eq}F {/eq} is the force in Newtons
• {eq}k {/eq}...

Hooke's Law & the Spring Constant: Definition & Equation

from

Chapter 4 / Lesson 19
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After watching this video, you will be able to explain what Hooke's Law is and use the equation for Hooke's Law to solve problems. A short quiz will follow.