Science center & children's museum exhibits · one-stop sourcing Emailsales@popscicat.com
WeChat popscicat / WhatsApp
PopSciCat Exhibit Store Interactive science exhibits
Direct from the source manufacturer
About
EN 中文
— —
My Account My Cart
Cart 0
Prices are shown to signed-in buyers — to view prices, export the quotation and submit an order.

Square-Wheeled Car

Mathematics

★Exhibit Content: Catenary ★Interaction: Mechanical Interaction ★Operation: Sit on the vehicle, pedal, and feel the difference from riding a bicycle. ★Exhibit Description: The exhibit consists of a shaped platform, auxiliary guiding mechanism, and a square-wheeled vehicle. A circular catenary-curved track is laid on the platform, with one square-wheeled vehicle on the track. The mechanism connects the bicycle device to the center, so that the bicycle rotates around the center. Ride the square-wheeled vehicle and try to ride on the arc-shaped track. Through actual operation of the square-wheeled vehicle, visitors experience the wonderful feeling that square wheels can still roll smoothly and appreciate the magic of mathematics. ★Scientific Principle: Visitors can ride the vehicle smoothly on the arc-shaped track without bumping up and down. The reason is that the track on which the wheels travel is a carefully designed catenary, and the length of the catenary is exactly equal to the side length of the square wheel. During travel, the distance between the wheel center and the ground remains constant, thus achieving smooth riding. The curved track of the square-wheeled vehicle is composed of meshing blocks whose surface shape is an inverted catenary. The arch curvature of the meshing blocks is determined by the catenary curve, and the total length of each inverted catenary arch is equal to the side length of the square wheel. A catenary is a curve whose shape is named for its similarity to the shape of a rope hanging from both ends under uniform gravity. When a square wheel rolls without sliding on a suitable inverted catenary meshing block track, the undulation of the track cancels out the change in the height of the center of gravity caused by the square wheel, and the center of the square wheel always remains at the same height.

Options

Review

Principle Display: ★★★★ Interaction Effect: ★★★ Ease of Installation: ★★★ Durability: ★★★ Overall Rating: ★★★

Browse all exhibits