The utility model discloses a slope device for mechanics demonstration. Bottom plate, a vertical rod is fixedly mounted on the left side of the top of the baseplate; sliding blocks are slidably connected to the peripheral sides of the vertical rods; an elastic steel belt is arranged on the right side of the slider; the end, away from the sliding block, of the elastic steel belt is slidably connected with a sliding groove formed in the top of the bottom plate through a moving block. Two supporting rods are arranged at the top of the bottom plate, rotating blocks are rotatably connected to the u...