Novel angular momentum conservation demonstration and quantitative determination experiment instrument

Abstract

The invention relates to an experiment instrument which comprises a support leg, a base, a leveling horizontal bubble, a fixed hollow support column, a lower wheel shaft, an upper wheel shaft, a hollow center rotation shaft, a hollow drum, a photoelectric door, a positive conductive brush, a negative conductive brush, a circular small motor, a turntable, a motor rotation shaft, a motor transmission bus, a transmission line, a transmission line and an electric control box. Three leveling support legs are arranged under the base. The leveling horizontal bubble is arranged on the base. The fixed hollow support column is arranged at the center of the base. The hollow center rotation shaft is arranged in the middle of the fixed hollow support column. The upper end of the hollow center rotation shaft is fixedly connected with a hollow center rotation shaft support column. The photoelectric door, the positive conductive brush and the negative conductive brush are successively alternately fixedly arranged on the hollow center rotation shaft support column from bottom to up. A positive conductive ring and the positive conductive brush are correspondingly fixed on the hollow drum through two insulation columns. According to the invention, the lower wheel disc of the improved novel experiment instrument is directly removed, and the whole experiment instrument is light and saves materials.

Description

technical field [0001] The patent of the present invention relates to an experimental instrument, in particular to a novel angular momentum conservation demonstration and quantitative determination experimental instrument. Background technique [0002] The existing demonstration instruments of conservation of angular momentum in the physics laboratory are all passive demonstrations. The main demonstration forms are: first, the hand-push type, that is, when the handle is pulled down by hand, the distance between the rotating connecting rod and the steel ball is the largest. (State 1), artificially let the rotating connecting rod and the steel ball rotate quickly, then grasp the handle with your hand and push up, so that the distance between the rotating connecting rod and the steel ball is reduced (state 2), and the state 1 is more rotating than the state 2 The moment of inertia of the system is large, because the total external moment of the rotating system is zero, and the ...

AI Technical Summary

Problems solved by technology

However, this experimental instrument is still inconvenient in specific use, especially the power supply line of the motor and the transmission line of the rotating system are arranged outside the hollow drum, and the photoelectric gate, conductive ring and conductive brush are respectively designed on the base and the lower surface of the lower disc. , not only the structure of the instrument is complex and messy, but also very inconvenient to operate

Images