Which one rolls faster

Exhibition Name

Which one rolls faster

Science Behind It

The exhibition items consist of two identical transparent tracks, two test wheels with the same external mass distribution (one mainly in the center and one at the edge), and an activation and release mechanism. The two rollers have the same mass and size, but the position of the metal blocks on the rollers is different, so their mass distribution is not the same. According to the principle of moment of inertia, the mass distribution of two wheels is different, and their moment of inertia is also different. When the mass distribution of a rotating object is closer to the center of the axis, it is easier to rotate around the axis and the speed is faster. On the contrary, the rotation speed slows down. In daily life, we can see that when figure skaters perform spin movements on the ice, they adjust the mass distribution by holding and relaxing their arms, thereby controlling their rotational speed.

Dimensions

Specification size: 0.75 × 0.68 × 2.1 meters.

exhibits materials: ① Booth: Bottom cabinet sheet metal, thickness ≥ 1.2mm

② Tabletop: Cambert board, thickness ≥ 12mm

③ Instruction board: Acrylic UV spray painting

④ Tabletop fixing components: standard triangle lock

Product structure: Designed with a science museum booth. The booth is made of 1.2mm galvanized steel plate, and the tabletop is made of 12mm anti PET plate. The internal carbon steel and damping shock pads are reserved, and heat dissipation holes are reserved. It is equipped with leakage protection device, and the modular design is convenient for later maintenance. All sheet metal components are treated with electrostatic spraying technology.

System Composition

Exhibition booth+display chip+instruction board

Rendering or physical photo