A diagram of a swing set is drawn showing a swing set with a swing pulled backward prior to release

Unfortunately, as a text-based AI, I cannot directly provide visual diagrams. However, I can describe the diagram of a swing set with a swing pulled backward prior to release for you.

In the diagram, you will see a swing set consisting of two vertical posts with a horizontal beam connecting them at the top. The posts are firmly planted in the ground for stability. The swing is attached to the horizontal beam by ropes or chains.

The swing itself is pulled backward, away from its resting position, indicating that someone has applied a force to move it away from its equilibrium position. The person or force that pulled the swing back can vary, but it is typically done by a person holding onto the swing and pulling it back by using their own strength.

The swing is shown in a position where it has been pulled backward to its maximum potential energy before its release. At this point, the ropes or chains holding the swing are stretched out, indicating tension forces acting upon them.

Once the swing is released, it will swing forward, propelled by the force applied during the "pullback." The potential energy stored in the swing during the pullback will be converted into kinetic energy, causing the swing to move back and forth.

Please note that this is a verbal description of the diagram as requested, and I apologize for any inconvenience caused by not providing a visual representation.