Elastic Energy

What equation is used to calculate elastic potential energy?

• E_{elastic = m g h}

• E_{elastic = 0.5 k x}²

• E_{elastic = F / E d}

Tags

NGSS.HS-PS3-2

Elastic potential energy is energy stored in an object, such as a spring, due to the object being stretched or compressed. In which position is it most likely that the spring has lost its elastic potential energy?

• W

• Y

• X

• Z

Robert stretches a spring with a spring constant of 3 N/m until it is extended by 50 cm. What is the elastic potential energy stored by the spring?

• 0.375J

• 2.8J

• 1J

• 0.0023

How much elastic potential energy does a spring store when it is compressed by 0.2 m if it has a spring constant of 5 N/m?

• 0.1 J

• 2 J

• 0.01 J

• 5 J

A spring has an extension of 20 cm. Calculate the elastic potential energy stored in the spring (k = 100 N/m).

• 2 J

• 5 J

• 7 J

• 1 J