Adjustable horizontal momentum conservation experimental instrument

Disclosed is an adjustable horizontal momentum conservation experimental instrument which is mainly applied to physical experiment teaching of universities and colleges, secondary technical schools and high schools. The instrument includes small balls, a track, a T-shaped base, a fine rope, a conical hammer, a conical protrusion, and horizontal adjustment screws. One small ball is placed on an inclined surface of the track and the other small ball is placed on a straight part of the track. The track is fixed on the T-shaped base. A horizontal adjustment screw is installed at each of the three corners of the T-shaped base. The conical hammer is tied on the fine rope which is hung at the upper end of the track. The conical protrusion is fixed on the T-shaped base. Before a momentum conservation verification experiment is carried out, the level of the experiment instrument is firstly adjusted. When the straight part of the lower end of the track is placed horizontally, the hung conical hammer is rightly over the conical protrusion. If the lower end of the track is not horizontal, the three horizontal adjustment screws on the T-shaped base are adjusted and then the track is adjusted horizontally and then it is measured that the masses of the small balls are m1 and m2 respectively. It is measured that the horizontal movement of a small ball of a level-throwing movement after rolling across the horizontal part of the track is s1 and then it is measured that horizontal movements of the two small balls of level-throwing movements after collision at the horizontal part of the track are s1' and s2' and thus momentum conservation can be verified through calculation.