CN2678046Y - Parabolic collision motion test apparatus - Google Patents
Parabolic collision motion test apparatus Download PDFInfo
- Publication number
- CN2678046Y CN2678046Y CN 200320111165 CN200320111165U CN2678046Y CN 2678046 Y CN2678046 Y CN 2678046Y CN 200320111165 CN200320111165 CN 200320111165 CN 200320111165 U CN200320111165 U CN 200320111165U CN 2678046 Y CN2678046 Y CN 2678046Y
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- parabolic
- paraboloid
- collision
- grooved tracks
- framework
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Abstract
The utility model relates to a parabolic collision motion test apparatus, which belongs to the technical field of educational apparatus and is used to solve the problem that the flat parabolic experimental means is complicated and has large error. The technical proposal is that using a magnetic particle indication panel to make the parabolic body be a step hollow cylinder with symmetric profile. The diameter of the middle part of the parabolic body is larger than the diameters of the both ends, and the two end surfaces are respectively provided with same permanent magnets. The cross-sectional shape of the groove track is matched with the profile of the parabolic body, and an adjusting shim is provided between the groove track and a frame, and the groove track is parallel to the magnetic particle indication panel. The utility model can complete multiple terms of physical tests such as flat parabolic, oblique parabolic, collision, etc. The parabolic body can meet the requirement that the parabolic body can keep constant distance with the magnetic particle indication panel when doing space motion, and thus the parabolic trace worked out is clear and accurate. The parabolic collision motion test apparatus has advantages of simple and easy, obvious visualizability, high accuracy, and great relative property.
Description
Technical field
The utility model relates to a kind of experimental apparatus, and the instrument especially for the flat throwing of demonstration object, oblique throwing, collision experiment in the physics teaching belongs to technical field of teaching instruments.
Background technology
The object level throw motion is an important content in the senior middle school physics curriculum teaching.According to the requirement of syllabus, the student depicts the track of level throw motion by experiment, and obtains the initial velocity of flat paraboloid according to movement locus.Traditional experimental technique is that the brassboard that will have coordinate paper places after the track, discharge bead in orbit, x value and y value by visual inspection bead movement locus, they are recorded on the coordinate paper, repeat above-mentioned steps repeatedly, note different coordinate values, the coordinate points that connects each time is then depicted the track of object level throw motion at every turn.In addition, a kind of bead impression transfer paper method is also arranged in addition.Comparatively speaking, the operation of bead impression transfer paper method is more more convenient.But said method all exists common shortcoming, that is: 1. beads need to discharge from sustained height repeatedly; 2. by visual inspection, describe the parabolic path that a plurality of somes marks draw and exist error.In addition, also have a kind of method, it adopts pen core is installed on paraboloid, and pen core contacts with coordinate paper during the paraboloid motion, and pen core is drawn movement locus on coordinate paper with object of which movement.Because produce friction between pen core and the drawing paper, movement locus is very inaccurate though the method is simple.
Summary of the invention
Technical problem to be solved in the utility model is: overcome the defective of above-mentioned prior art and the parabolic collision motion that a kind of experimental technique is simple, intuitive good, degree of accuracy is high experiment instrument is provided.
The alleged problem of the utility model is solved by following technical scheme:
A kind of parabolic collision motion experiment instrument, comprise data board, framework, grooved tracks, paraboloid in the formation, wherein data board is embedded in the framework, grooved tracks is arranged on the framework, its special feature is: described data board is the magnetic display board, described paraboloid is the stage hollow cylinder of profile symmetry, its middle part diameter is greater than the two ends diameter, on two end faces, be respectively equipped with identical permanent magnet, the cross sectional shape of described grooved tracks and the profile of paraboloid are complementary, be provided with the adjustment pad between grooved tracks and the framework, grooved tracks is parallel with the magnetic display board.
Above-mentioned parabolic collision motion experiment instrument, described framework bottom is provided with and connects the thing groove, is lined with flexible pad in the groove.
Above-mentioned parabolic collision motion experiment instrument, described base of frame is provided with leg, and leg is provided with the leveling bolt.
Above-mentioned parabolic collision motion experiment instrument, flat throwing track is arranged on the top of oblique throwing track in the described grooved tracks.
Design of the present utility model utilizes the magnetic display board as data board, can satisfactorily finish multinomial Physical Experiments such as flat throwing, tiltedly throwing, collision with the paraboloid that has permanent magnet.The requirement that the paraboloid contour structures that this instrument adopted can satisfy when it does spatial movement and the magnetic display board keeps constant distance, with the magnetic attraction magnetic of equilibrium, thereby the parabolic path of being made is clear, accurate.Compare with traditional experimental technique, it has advantage simple and easy to do, that intuitive outstanding, degree of accuracy is high, comparative is strong.Used as the instruments used for education of teaching demonstration or student experimenting, can receive and deepen student's perceptual knowledge, improve the good result of learning interest.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is the structural representation of paraboloid;
Fig. 4 is the sectional view of track.
Embodiment
Design of the present utility model is the principle of writing of utilizing the magnetic blackboard, with magnetic display board 2 is data board, the round sheet permanent magnet is set on paraboloid, and make paraboloid when motion permanent magnet press close to the magnetic display board, rely on the suction of permanent magnet, attract the ferromagnetic powder in the magnetic sheet, make the movement locus that stays paraboloid on the plate, use magnetic blackboard eraser can wipe track easily.In above-mentioned experimentation, crucial part is that the requirement paraboloid is in the motion process that de-orbits, permanent magnet on it keeps a suitable constant distance with the magnetic display board all the time, weaken apart from magnetic force too far away, can influence the clarity of the movement locus of being described, distance too closely then might produce friction with the magnetic display board, influences the degree of accuracy of movement locus.Test shows that the optimum distance between permanent magnet and the magnetic sheet is 0.5～1.0 millimeter.Referring to Fig. 3, for reaching above-mentioned requirements, the utility model changes traditional spherical paraboloid into the stage hollow cylinder of profile symmetry, two identical permanent magnets 10 are separately positioned on the both ends of the surface of paraboloid, if want to guarantee that the paraboloid plane of movement is parallel with the magnetic display board, paraboloid is vital along the symmetry and the balance of its center line and axis, in the both ends of the surface of paraboloid permanent magnet one being set all is in order to guarantee the paraboloid gravitational equilibrium, two are to use conveniently, needn't distinguish the corresponding surface with the magnetic display board during experiment.Compare with sphere, the accuracy and the stability of mass centre when this shape can improve motion are difficult for breaking away from plane of movement because of the extraneous factor influence.Referring to Fig. 4, for cooperating the downglide motion of paraboloid, the cross sectional shape of grooved tracks 3 and paraboloid profile are complementary.
Magnetic display board in the utility model is a kind of magnetic " blackboard ", and the main body of blackboard is many boxworks that fuse, and is full of liquid fillers and magnetic iron powder particle in it, the upper surface plastic membrane sealing.When using the magnetic thing to streak on its surface, the magnetic iron powder particle is attracted, and can occur clearly vestige on plastic sheeting, wipes overleaf with magnetic blackboard eraser and draws, and vestige can be dashed out.This type of production marketing is also arranged on the market.
Grooved tracks in the utility model comprises flat track and the oblique track of throwing thrown, they are screwed on framework, be provided with between grooved tracks and the magnetic display board and adjust pad 9, can increase and decrease pad as required before the experiment, with the distance between adjustment grooved tracks and the magnetic display board, and make grooved tracks and magnetic sheet keeping parallelism.The framework bottom is provided with and connects thing groove 4, for the protection paraboloid is not clashed, connects and is provided with flexible pad 8 such as sponge, sticky pad in the thing groove.The bottom of framework is provided with leg 5, and leg is provided with leveling bolt 6, should regulate the leveling bolt before the experiment and make flat end maintenance level of throwing grooved tracks.
Paraboloid and grooved tracks all adopt diamagnetic material to make.
The utility model if be equipped with the different paraboloid of quality, can also be finished collision experiment except that finishing flat the throwing oblique impeller ramming tests.
Claims (4)
1. parabolic collision motion experiment instrument, comprise data board in the formation, framework, grooved tracks, paraboloid, wherein data board is embedded in the framework, grooved tracks is arranged on the framework, it is characterized in that: described data board is magnetic display board (2), described paraboloid is the stage hollow cylinder of profile symmetry, its middle part diameter is greater than the two ends diameter, on two end faces, be respectively equipped with identical permanent magnet (10), the cross sectional shape of described grooved tracks (3) and the profile of paraboloid are complementary, be provided with between grooved tracks and the framework and adjust pad (9), grooved tracks is parallel with the magnetic display board.
2. parabolic collision motion experiment instrument according to claim 1 is characterized in that: described framework (1) bottom is provided with and connects thing groove (4), is lined with flexible pad (8) in the groove.
3. parabolic collision motion experiment instrument according to claim 2 is characterized in that: described base of frame is provided with leg (5), and leg is provided with leveling bolt (6).
4. according to claim 1,2 or 3 described parabolic collision motion experiment instruments, it is characterized in that: flat throwing track is arranged on the top of oblique throwing track in the described grooved tracks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320111165 CN2678046Y (en) | 2003-11-03 | 2003-11-03 | Parabolic collision motion test apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320111165 CN2678046Y (en) | 2003-11-03 | 2003-11-03 | Parabolic collision motion test apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2678046Y true CN2678046Y (en) | 2005-02-09 |
Family
ID=34580831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320111165 Expired - Fee Related CN2678046Y (en) | 2003-11-03 | 2003-11-03 | Parabolic collision motion test apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2678046Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101901560A (en) * | 2010-07-13 | 2010-12-01 | 浙江大学 | Experimental device for projectile motion study capable of displaying time in real time |
| CN106898203A (en) * | 2017-04-28 | 2017-06-27 | 李佳霖 | Projectile motion experiment instrument and experiment instrument system |
| CN108961950A (en) * | 2018-10-02 | 2018-12-07 | 马兆国 | A kind of physics puts down the apparatus for demonstrating of throwing, collision experiment |
-
2003
- 2003-11-03 CN CN 200320111165 patent/CN2678046Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101901560A (en) * | 2010-07-13 | 2010-12-01 | 浙江大学 | Experimental device for projectile motion study capable of displaying time in real time |
| CN101901560B (en) * | 2010-07-13 | 2012-01-11 | 浙江大学 | Experimental device for projectile motion study capable of displaying time in real time |
| CN106898203A (en) * | 2017-04-28 | 2017-06-27 | 李佳霖 | Projectile motion experiment instrument and experiment instrument system |
| CN106898203B (en) * | 2017-04-28 | 2019-04-12 | 李佳霖 | Projectile motion experiment instrument and experiment instrument system |
| CN108961950A (en) * | 2018-10-02 | 2018-12-07 | 马兆国 | A kind of physics puts down the apparatus for demonstrating of throwing, collision experiment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |