An apparatus that can be used to experiment on rotation motion on a fixed axis. Tool is an iron pulley mounted on a frame that should be hung or mounted on a stand or wall of the room. Pulley with diameter of 200 mm with a mass of approximately 3 kilograms, it can rotate almost friction free on its axis. Equipped with a small pulley and a set of 250 grams and a set of 25 grams of loads.

The experiment involves determining the angular velocity of rotational motion, angular acceleration rotational motion, the relationship between the moment of force and angular acceleration, moment of friction force caused by friction on the axis of rotation, and determining the moment of inertia of solid pulley.

This tool set also comes with accessories for mounting on the wall.