## Questions and Answers

What is the formula for the elastic potential energy of a spring?

$\frac{1}{2}kx^2$

What does the spring constant indicate?

Stiffness of the spring

What are the units of the spring constant?

N/m

When work is done to stretch or compress the spring, where is this work stored?

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What is the deformation 'x' in the context of a spring?

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Which of the following correctly defines the elastic potential energy of a spring?

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What effect does a weak spring have on its spring constant?

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What are the units of the deformation 'x' in the context of a spring?

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How does a stiff spring store potential energy compared to a weak spring?

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Which term describes the property that tells you the stiffness of a spring?

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## Study Notes

### Elastic Potential Energy of a Spring

- The formula for the elastic potential energy of a spring is 1/2kx^2, where k is the spring constant and x is the deformation.

### Spring Constant

- The spring constant (k) indicates the stiffness of a spring.
- The units of the spring constant are N/m (newtons per meter).

### Work and Energy Storage

- When work is done to stretch or compress the spring, the work is stored as elastic potential energy.

### Deformation 'x'

- In the context of a spring, the deformation 'x' refers to the distance from the spring's equilibrium position.

### Elastic Potential Energy Definition

- Elastic potential energy of a spring is correctly defined as the energy stored in a spring when it is compressed or stretched.

### Spring Stiffness and Spring Constant

- A weak spring has a small spring constant, indicating less stiffness.
- A stiff spring has a large spring constant, indicating more stiffness.

### Units of Deformation 'x'

- The units of the deformation 'x' are meters (m).

### Stiffness and Potential Energy

- A stiff spring stores more potential energy compared to a weak spring for the same deformation.

### Term for Stiffness Property

- The term that describes the property that tells you the stiffness of a spring is the spring constant (k).