The set includes 6 balls of 25mm diameter each of different materials-one each of wood, aluminum, steel, copper, brass & lead.
deal for collision experiments and pendulum demonstrations and can also be used to meet a variety of laboratory needs.
Solid spheres are also suitable for density/volume experiments.
(NOTE: Due to the nature of iron, rust will develop on the surface. This will not affect the experiment. Fine sandpaper can be used to remove the rust).