Demonstration conservation of mechanical energy experiment instrument
Technical field
The utility model relates to the conservation of mechanical energy experimental apparatus that a kind of demonstration or research kinetic energy and gravitional force transform, belong to a kind of teaching and experiment equipment.
Background technology
In education experiment,, need carry out the experiment of energy conservation for research and demonstration law of conservation of energy.Normally used experimental technique or apparatus structure is simple, experiment can only be analyzed qualitatively; Structure is too complicated, and the cost height of experiment feels that experiment effect is undesirable.But what need at present is a kind of both simple in structure, and experimental cost is low, and more clearly lecture experiment process can be arranged again, reaches the experimental apparatus of accurate demonstration effect.
Summary of the invention
The purpose of this utility model is to overcome the deficiency that prior art exists, and provides a kind of simple and reasonable for structure, and is easy to operate, and experimental result is accurate and reliable, can study the demonstration conservation of mechanical energy experiment instrument that kinetic energy and gravitional force transform.
The purpose of this utility model is finished by following technical solution, it includes a base at least, one fixed support, also has a flat board that is fixed on the support upper end, the center is connected to a drop wire above flat board, be fixed with a steel swing ball under the line, above at least one side of flat board, be provided with one and can inhale the magnetic release of putting the steel swing ball, and the flat board at the swinging track edge of steel swing ball be provided with at least two photogate sensors.
Described flat board is the flat board of a lower half shape, and its front is shaped on scale and indicates, and the flat board at the swinging track edge of steel swing ball is provided with at least one section circular arc elongated slot, and at least two photogate sensors are fixed in the circular arc elongated slot.
Described graduated scale is shown horizontal line and indicates, and flat board is provided with at least two sections circular arc elongated slots, and wherein elongated slot is to fix the magnetic release on the end points.
In described at least two photogate sensors at least one is fixed in the dull and stereotyped elongated slot of vertical centre, and wherein at least one can be movable.
Described magnetic release comprises that one is fixed on the release support in the circular arc elongated slot, is connected with the loam cake one that can outwards move or upwards dig, that magnet is equipped with in the end on it.
The utlity model has simple and reasonable for structurely, easy to operate, experimental result is accurate and reliable, can study kinetic energy and gravity potential transformation of energy, and experimental cost is low, can more clearly ground lecture experiment process etc. characteristics.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is a dull and stereotyped synoptic diagram of the present utility model
Embodiment
Below in conjunction with accompanying drawing the utility model is described in detail: shown in the accompanying drawing 1, the utility model includes a base 1 at least, one fixed support 2, also has a flat board 3 that is fixed on support 2 upper ends, this flat board 3 is the flat board of a lower half shape, its front is shaped on scale and indicates 4, and the graduated scale shown in the figure is shown horizontal line and indicates.The center is installed in a cycloid fixator 5 above dull and stereotyped 3, be connected to a sagging cycloid 6 with the cycloid fixator, be fixed with a steel swing ball 7 under the cycloid, above at least one side of dull and stereotyped 3, be provided with one and can inhale the magnetic release 8 of putting steel swing ball 7, and the flat board 3 at the swinging track edge of steel swing ball 7 is provided with at least two photogate sensors 9 and 10.
The flat board 3 at the swinging track edge of described steel swing ball 7 is provided with at least one section circular arc elongated slot 11, and at least two photogate sensors 9 and 10 are fixed in the circular arc elongated slot 11.Flat board 3 shown in the figure is provided with two sections circular arc elongated slots 11, is wherein fixing magnetic release 8 on elongated slot one upper extreme point.
For two photogate sensors 9 and 10 are arranged, the optoelectronic transceiver mouth position alignment of one of them photogate 9 is fixed in the dull and stereotyped elongated slot 11 of vertical center line 18 shown in Figure 2 shown in the figure, and its graduated scale is shown on 17 on the 0cm point.Another photogate can be movable along circular arc elongated slot 11.
Described magnetic release 8 comprises that one is fixed on the release support 12 in the circular arc elongated slot 11, is connected with the release loam cake 14 one that can outwards move, that magnet 13 is equipped with in the end on it.
Steel swing ball 7 is placed the below of magnetic release 8, swing ball 7 is attracted to be fixed on the below of magnetic release 8 by the magnet in the loam cake 14 of magnetic release, remove the loam cake 14 of magnetic release device then laterally, steel ball loses the suction of magnet 13 and is subjected to gravity effect sagging immediately, steel swing ball 7 is by two photogate sensors 10 and 9 in sagging process, be connected to two photogate sensor delivery outlets 15 and 16 ends by the hand-held main frame of mechanical energy, read its parameter, measure the kinetic energy of swing ball any time (position) in swing process and the value of gravitional force, can qualitative analysis, can carry out quantitatively the rule that research kinetic energy and gravitional force are followed in transforming again.