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Although you may think of a Slinky as a toy, physics teachers use it as a go-to gadget to teach students the basics of forces and waves. If you are looking for a science project that involves a Slinky but don't know where to begin, here are some Slinky science projects to try out.

## Centripetal Force Experiment

Use a Slinky to illustrate centripetal force. Stand still and hold the Slinky at one end. Twirl it around your head and body. Notice how the opposite end of the Slinky swings away from you. Experiment with the amount of energy needed to change the angle of the Slinky to the ground. You will need to rotate the Slinky faster in order to make it parallel to the ground.

Use a Slinky to visualize and understand how longitudinal waves, such as sound, move. Perform this experiment with a partner. Grasp one end of the Slinky while your partner grasps the other end, and then stretch the Slinky out between the two of you. Gather together several coils of the Slinky and release it. The gathered coils will press against one another and travel to the other end of the Slinky, rebound, and then travel back. This demonstrates how sound's longitudinal waves echo off of a solid surface.