The formulas related to Hooke’s law are:

- F =
- k =

**Example:**

A block is suspended from the ceiling and is 12 cm from the ceiling. The block has a mass of 3 kg. The spring has an unstretched length of 2 cm. Find the spring constant and the amount of elastic potential energy stored in the spring when the block is at this height.

**Given**:

**Find**:

We can use Hooke’s Law to find the spring constant and potential energy.