Understanding Springs and Hooke's Law

The video tutorial explains the mechanics of springs, including compression and tension, and introduces Hooke's Law, which describes the linear relationship between force and extension. It contrasts this with the non-linear behavior of rubber bands. The video also covers elastic properties, equilibrium, spring constants, and energy storage, concluding with a calculation of elastic potential energy.

What happens to a spring when a force is applied?

• It remains unchanged.

• It can either compress or stretch.

• It only stretches.

• It only compresses.

What does Hooke's Law state about the relationship between force and extension?

• They are exponentially related.

• They are inversely proportional.

• They are directly proportional.

• They are unrelated.

What happens to a spring at its elastic limit?

• It returns to its original shape.

• It becomes permanently deformed.

• It breaks immediately.

• It becomes stronger.

How does a rubber band's behavior differ from a spring's when force is applied?

• It does not stretch at all.

• It shows a linear relationship.

• It shows a non-linear relationship.

• It follows Hooke's Law.

What is the spring constant a measure of?

• The color of the spring.

• The length of the spring.

• The weight of the spring.

• The strength of the spring.

Which spring stores the most energy when extended by the same amount?

• All springs store the same energy.

• The spring with the medium force.

• The spring with the largest force.

• The spring with the smallest force.

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

• Elastic potential energy = spring constant × extension

• Elastic potential energy = 0.5 × spring constant × extension

• Elastic potential energy = spring constant × extension squared

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

In what units is elastic potential energy measured?

• Meters

• Newtons

• Kilograms

• Joules

If a spring is stretched by 50 cm and has a spring constant of 3 N/m, what is the elastic potential energy stored?

• 3 Joules

• 1.5 Joules

• 0.375 Joules

• 0.75 Joules

What happens to the energy stored in a spring when it returns to its original shape?

• It is doubled.

• It is released.

• It remains stored.

• It is lost.