Deforming Objects and Relationship between Force and Extension

The video tutorial explains how objects can be deformed by applying forces in various ways, such as stretching, compressing, and bending. It distinguishes between elastic and inelastic deformation, where elastic deformation allows objects to return to their original shape, while inelastic does not. The tutorial also covers the relationship between force and extension in springs, introducing the formula F=KE, where F is force, K is the spring constant, and E is the extension. An example calculation demonstrates how to find the spring constant using given data.

What happens to an object when forces act along its axis and away from its center?

• The object bends.

• The object compresses.

• The object stretches.

• The object remains unchanged.

How is elastic deformation characterized?

• The object changes color.

• The object breaks.

• The object returns to its original shape.

• The object becomes heavier.

What is the relationship between force and extension in an elastic spring?

• The extension is directly proportional to the force.

• The extension is equal to the force.

• The extension is inversely proportional to the force.

• The extension is unrelated to the force.

What does the spring constant represent?

• The force needed to stretch the spring by 1 meter.

• The length of the spring.

• The weight of the spring.

• The color of the spring.

In the example calculation, what is the spring constant if a 4 Newton force stretches the spring by 0.007 meters?

• 1000 Newtons per meter

• 700 Newtons per meter

• 571 Newtons per meter

• 400 Newtons per meter