Springs

The video tutorial explains the behavior of springs under compression and tension, comparing them to bridges. It introduces Hooke's Law, which states that the extension of a spring is directly proportional to the force applied, as long as the elastic limit is not exceeded. The video contrasts this with the nonlinear behavior of rubber bands. It also covers the concept of equilibrium in springs and how energy is stored in them, providing a formula for calculating elastic potential energy.

What happens to the particles in a material when it is compressed?

• They become larger.

• They move further apart.

• They are pushed slightly closer together.

• They remain unchanged.

According to Hooke's Law, what happens to the extension of a spring if the force applied is doubled?

• The extension remains the same.

• The extension is halved.

• The extension doubles.

• The extension triples.

Why does a rubber band not follow Hooke's Law?

• It has a linear relationship between force and extension.

• It stretches uniformly with increasing force.

• It shows a nonlinear relationship with force and extension.

• It cannot be stretched at all.

What is the spring constant a measure of?

• The length of the spring.

• The weight the spring can hold.

• The strength of the spring.

• The color of the spring.

Which spring will store the most energy if extended by the same amount?

• The spring that is the shortest.

• The spring that is the longest.

• The spring that requires the most force.

• The spring that requires the least force.

What is the formula for calculating elastic potential energy in a spring?

• Elastic potential energy = 0.5 x spring constant x extension squared

• Elastic potential energy = 0.5 x spring constant x extension

• Elastic potential energy = 0.5 x mass x velocity squared

• Elastic potential energy = spring constant x extension

If a spring with a spring constant of 3 N/m is extended by 0.5 meters, what is the elastic potential energy stored?

• 2.25 Joules

• 1.5 Joules

• 0.75 Joules

• 3 Joules