CN201289699Y - Demonstration teaching aid for law of conservation of momentum - Google Patents
Demonstration teaching aid for law of conservation of momentum Download PDFInfo
- Publication number
- CN201289699Y CN201289699Y CNU200820106018XU CN200820106018U CN201289699Y CN 201289699 Y CN201289699 Y CN 201289699Y CN U200820106018X U CNU200820106018X U CN U200820106018XU CN 200820106018 U CN200820106018 U CN 200820106018U CN 201289699 Y CN201289699 Y CN 201289699Y
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- Prior art keywords
- teaching aid
- conservation
- law
- momentum
- slideway
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Abstract
The utility model relates to a teaching aid used in physical experiments, in particular to a teaching aid for demonstrating the law of conservation of momentum. The teaching aid comprises a slideway and an ejection device fixedly installed at the rear end part of the slideway. The teaching aid is capable of making a multi-direction, multi-angle demonstration of the relationship of conservation of momentum between objects subjected to head-on collision or oblique collision on a horizontal plane, and has the advantages of stable experiment, small error, good validation effect, simple and reasonable overall structure, and low cost. Moreover, the teaching aid is not constrained by the site, and is available, whether in class or out of class, for students to operate. Characterized by simple and convenient operation, the teaching aid is favorable for undertaking of independent research by students, thereby achieving the teaching purpose of improving the students' researching ability. The utility model represents a comparatively perfect teaching aid for demonstrating the law of conservation of momentum, and is suitable to be popularized and applied.
Description
Technical field
The utility model relates to the Physical Experiment teaching aid, particularly a kind of law of conservation of momentum demonstration teaching aid.
Background technology
The checking law of conservation of momentum is the student experimenting of outbalance in the physics experiments of high school teaching, adopt collision experiment or level throwing collision experiment no matter be, existing teaching material all is to adopt lay transfer paper on blank sheet of paper, and bead lands the method for leaving a trace and determines the flying distance of bead.This type of experiment measuring distance is to utilize bead to land bead that the back stays on transfer paper and blank sheet of paper to pound trace and weight dot spacing from measuring calculating, owing to roll between the bead collision unstable, have when bead lands that secondary is upspring and rolling and sliding phenomenon, cause experimental error bigger, and should the installation of experiment utensil adjust loaded down with trivial details, also there is certain requirement the test site, only can verify, be unfavorable for the student experimenting operation the object collision on same straight line; In addition, also provided some and be equipped with the design proposal of electronic measuring device in some documents and materials, though it has improved measuring accuracy, but still it is higher to exist cost, baroque shortcoming.
The utility model content
Technical problem to be solved in the utility model provides a kind of teaching aid of the law of conservation of momentum of demonstrating to overcome the deficiencies in the prior art on surface level.
The technical scheme that its technical matters that solves the utility model adopts is:
Law of conservation of momentum demonstration teaching aid, this teaching aid comprise a slideway 1 and the catapult-launching gear that is fixedly installed in slideway 1 rearward end.
On described slideway 1 upper surface level meter 2 is installed also, the slideway bottom is equipped with height control knob 3.
Being shaped as of described slideway 1 is fan-shaped.
Described catapult-launching gear comprises a door type framework 4 that is fixedly installed in slideway 1 rearward end, be located at and have certain flexible stripe board 5 and a limiting plate 6 on the type framework 4, wherein, stripe board 5 vertically is provided with respect to door type framework 4, its top fixedly is lifted on the crossbeam rear portion of a type framework 4, limiting plate 6 is horizontally set at type framework 4 bottom, and the two ends of limiting plate 6 are separately fixed on the left and right frame of a type framework 4.
Described catapult-launching gear also comprises a night bolt 7, and these night bolt 7 crosswise fixed are installed on type framework 4 rear portion.
The both sides, lower end of described stripe board 5 are respectively arranged with spacing card post 8.
Also be installed with balancing weight 9 on the described stripe board 5 bottom trailing flanks.
The obtained beneficial effect of the utility model is: this teaching aid can be concerned by the momentum conservation between the bump object in multi-direction with central collision, oblique impact etc. on the surface level, different angles demonstration, experiment is stable, error is little, verification the verifying results is good, and one-piece construction advantages of simple, cost are low, not restricted by the place, class all can allow the student operate down on class; It is easy and simple to handle, helps the student and independently probes into, reach to improve the teaching purpose that the student probes into ability, and be a kind of comparatively desirable law of conservation of momentum demonstration teaching aid.
Description of drawings
Fig. 1 is the utility model one-piece construction synoptic diagram.
Fig. 2 is the vertical view of Fig. 1.
Embodiment
The utility model is described in further detail below with reference to drawings and Examples: as Fig. 1, shown in Figure 2, law of conservation of momentum demonstration teaching aid, this teaching aid comprises a fan-shaped slideway 1, on fan-shaped slideway 1 upper surface, level meter 2 is installed, fan-shaped slideway 1 bottom is equipped with height control knob 3, be installed with catapult-launching gear in fan-shaped slideway 1 rearward end, this catapult-launching gear comprises that one is installed on the door type framework 4 of fan-shaped slideway 1 rearward end by screw retention, be located at and have certain flexible bar steel plate 5 and a limiting plate 6 on the type framework 4, wherein, bar steel plate 5 vertically is provided with respect to door type framework 4, its top offers bar hole, and it is affixed by the corresponding bar hole bolt and nut of offering on door type framework 4 crossbeams, limiting plate 6 is horizontally set at type framework 4 bottom, and the two ends of limiting plate 6 are fixed on a left side of type framework 4 by bolt and nut respectively, on the left frame.This catapult-launching gear also comprises a night bolt 7, these night bolt 7 horizontal fastening type frame rear portion that are installed on.The both sides, lower end of this bar steel plate 5 are respectively arranged with spacing card post 8.Also be welded with balancing weight 9 on these bar steel plate 5 bottom trailing flanks.
During use, collision object is selected the rigidity object for use, the preferred two pieces of cylindric flat game moneys of present embodiment, earlier will be wherein one piece be placed in spacing card post 8 places, another piece overhead in or be inclined in this game money front end, adjust the fixed position of bar steel plate 5 tops on door type framework 4 crossbeams again, the spacing that makes its lower surface and fan-shaped slideway 1 upper surface is less than the thickness that is clashed into game money, pull-up bar steel plate 5 is opened night bolt 7, makes the inserted link of night bolt 7 mix bar steel plate 5, press the switch of night bolt 7 this moment, the inserted link withdrawal of night bolt 7, bar steel plate 5 elastic resets, bump game money, measure the displacement of game money, according to theorem of kinetic energy, represent speed with displacement, can verify the law of conservation of momentum.
Claims (7)
1, law of conservation of momentum demonstration teaching aid is characterized in that this teaching aid comprises a slideway (1) and the catapult-launching gear that is fixedly installed in slideway (1) rearward end.
2, law of conservation of momentum demonstration teaching aid according to claim 1 is characterized in that on described slideway (1) upper surface level meter (2) being installed also, and slideway (1) bottom is equipped with height control knob (3).
3, law of conservation of momentum demonstration teaching aid according to claim 1 is characterized in that being shaped as of described slideway (1) is fan-shaped.
4, law of conservation of momentum demonstration teaching aid according to claim 1, it is characterized in that described catapult-launching gear comprises that one is fixedly installed in the door type framework (4) of slideway (1) rearward end, be located at and have certain flexible stripe board (5) and a limiting plate (6) on the type framework (4), wherein, stripe board (5) is with respect to the vertical setting of door type framework (4), its top fixedly is lifted on a crossbeam rear portion of type framework (4), limiting plate (6) is horizontally set at type framework (a 4) bottom, and the two ends of limiting plate (6) are separately fixed at a left side of type framework (4), on the left frame.
5, law of conservation of momentum demonstration teaching aid according to claim 4 is characterized in that described catapult-launching gear also comprises a night bolt (7), and this night bolt (7) crosswise fixed is installed on type framework (a 4) rear portion.
6, law of conservation of momentum demonstration teaching aid according to claim 4 is characterized in that the both sides, lower end of described stripe board (5) are respectively arranged with spacing card post (8).
7, law of conservation of momentum demonstration teaching aid according to claim 4 is characterized in that also being installed with balancing weight (9) on the trailing flank of described stripe board (5) bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820106018XU CN201289699Y (en) | 2008-09-23 | 2008-09-23 | Demonstration teaching aid for law of conservation of momentum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820106018XU CN201289699Y (en) | 2008-09-23 | 2008-09-23 | Demonstration teaching aid for law of conservation of momentum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201289699Y true CN201289699Y (en) | 2009-08-12 |
Family
ID=40981378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820106018XU Expired - Fee Related CN201289699Y (en) | 2008-09-23 | 2008-09-23 | Demonstration teaching aid for law of conservation of momentum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201289699Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105913732A (en) * | 2016-07-11 | 2016-08-31 | 周诺 | Momentum conservation and momentum conversion experiment device |
| CN107862949A (en) * | 2018-01-09 | 2018-03-30 | 李新源 | Servicing unit for Physical Experiment |
| CN111161600A (en) * | 2020-01-21 | 2020-05-15 | 中北大学 | Experiment demonstration device based on momentum conservation law |
-
2008
- 2008-09-23 CN CNU200820106018XU patent/CN201289699Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105913732A (en) * | 2016-07-11 | 2016-08-31 | 周诺 | Momentum conservation and momentum conversion experiment device |
| CN107862949A (en) * | 2018-01-09 | 2018-03-30 | 李新源 | Servicing unit for Physical Experiment |
| CN111161600A (en) * | 2020-01-21 | 2020-05-15 | 中北大学 | Experiment demonstration device based on momentum conservation law |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090812 Termination date: 20110923 |