This device demonstrates the physical law of "the gentler the slope, the easier it is" through an adjustable slope. Equipped with force sensors and data acquisition terminals, real-time display of tension change curves at different angles; Equipped with a digital tension sensor (range 0-20 N, resolution 0.01 N) and a magnetic suction car (with 4 adjustable weight slots). Support for expanding experiments: exploring friction coefficient, mechanical efficiency, energy conservation, etc. Application scenario: Instrument transfer between teaching buildings and laboratory buildings; Storage ramp, underground garage for goods entry and exit; Logistics center platform and truck transition section, etc.