Springs: Structure, Material, and Function

The video tutorial explains what springs are, highlighting their elasticity and ability to stretch or compress. It discusses the materials used to make springs, emphasizing the need for metal in machine applications due to its durability and stiffness. The tutorial uses a paper clip to demonstrate how springs work, showing how coiling changes the metal's properties, making it easier to stretch or compress. The concept of pre-stressed springs and energy absorption is also covered.

What is the primary reason metal is used for springs in machines?

• Metal is easier to shape.

• Metal is durable and can resist pulling forces.

• Metal is more colorful.

• Metal is cheaper than other materials.

Why is it easier to stretch a paper clip when it is coiled around a pencil?

• The pencil makes the paper clip longer.

• Coiling changes the paper clip's material.

• Coiling stores energy, making it easier to stretch.

• The pencil adds weight to the paper clip.

What happens to the atoms in a material when it is stretched in its original form?

• They change into a different element.

• They become heavier.

• They are tugged out of their positions.

• They become more colorful.

How does pre-stressing affect a spring?

• It allows the spring to absorb more energy.

• It changes the color of the spring.

• It makes the spring heavier.

• It makes the spring longer.

What is the effect of having more windings in a spring?

• It changes the spring's color.

• It makes the spring heavier.

• It allows the spring to change shape more easily.

• It makes the spring harder to compress.