caption: The image shows a drawing of a machine with a wheel on it, which appears to be a catapult. The drawing is on a piece of paper with some text written on it. The catapult is composed of several components, including a wheel, a catapult, and a catapult arm. The wheel is connected to the catapult arm, which is used to propel the catapult forward. The text on the paper likely provides further information about the catapult and its components.