# A block with 2 kg mass is pressed against a spring with k = 7200 N/m compressing it 10 cm. When...

## Question:

A block with 2 kg mass is pressed against a spring with k = 7200 N/m compressing it 10 cm.

When the spring is released find:

(a) the kinetic energy of the block after it leaves the spring

(b) the velocity of the block

## Spring:

Spring is an elastic device that deforms under the load and restores its original shape after the removal of the load. When the spring is compressed by the external agent, the energy stored in the spring is expressed by the following relation:

{eq}E=\dfrac{1}{2}kx^{2} {/eq}

k is the stiffness of the spring

x is the compression of the spring

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We are given the following data:

• Mass of the block is {eq}m=2\ \text{kg} {/eq}
• Spring constant {eq}k=7200\ \text{N/m} {/eq}
• Compression of spring...

Practice Applying Spring Constant Formulas

from

Chapter 17 / Lesson 11
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In this lesson, you'll have the chance to practice using the spring constant formula. The lesson includes four problems of medium difficulty involving a variety of real-life applications.