CN104835389A - Multifunctional physical exploration experiment demonstration instrument - Google Patents
Multifunctional physical exploration experiment demonstration instrument Download PDFInfo
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- CN104835389A CN104835389A CN201510274087.6A CN201510274087A CN104835389A CN 104835389 A CN104835389 A CN 104835389A CN 201510274087 A CN201510274087 A CN 201510274087A CN 104835389 A CN104835389 A CN 104835389A
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- air track
- demonstration instrument
- guide rail
- arc
- experiment demonstration
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
- G09B23/08—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for statics or dynamics
- G09B23/10—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for statics or dynamics of solid bodies
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Abstract
The invention discloses a multifunctional physical exploration experiment demonstration instrument. The multifunctional physical exploration experiment demonstration instrument includes a segment of vertically arranged arc-shaped guide rail and a segment of horizontally arranged air track, small ball rolling sliding grooves are arranged on the arc-shaped guide rail and the air track, a small ball induction device is also arranged on the horizontal air track, one side of the horizontal air track, which is away from the arc-shaped guide rail, is also provided with a spring hanger, and the demonstration instrument also includes a height gauge arranged at one side of the arc-shaped guide rail and used for measuring the initial height of a small ball and a horizontal calibrated scale arranged at one of the air track and used for measuring horizontal motion distance of the small ball. The multifunctional physical exploration experiment demonstration instrument provided by the invention can restore the condition of a smooth horizontal plane to a large extent and help students to understand the first law of Newton, and at the same time, the demonstration instrument can also explore the law of conservation of mechanical energy and the law of kinetic energy.
Description
Technical field
The invention belongs to teaching aid field, be specifically related to a kind of multi-functional physics fiber communication experiment demonstration instrument.
Background technology
In junior middle school's textbook to probe into Newton first law adopt be allow bead roll on the inclined-plane of sustained height, observe the distance of stopping on the surface level of unlike material, the conclusion obtained is on more smooth surface level, the distance of bead motion is far away, draw finally by reasoning from logic, if surface level is smooth, bead will do linear uniform motion always go down.But this is a thought experiment all the time, do not have the foundation of reality, student is difficult to break exists haunting prescientific concept---think that power is the reason maintaining object of which movement.The change of kinetic energy and potential energy in object free-falling process is passed through in senior middle school's textbook, thus checking conservation of mechanical energy.But it is pretty troublesome that dotted timer computing velocity is used in this experiment, between paper tape and dotted timer, there is very large friction force, cause measurement result to have certain error.Be make dolly obtain speed by the acting of several bungees for the checking of kinetic energy law in senior middle school's textbook, measure speed by dotted timer and paper tape again simultaneously.This experiment is difficult to successfully in teaching of senior high school, and usual teacher does not verify theorem of kinetic energy.Thus, the author designs multi-functional physics fiber communication experiment demonstration instrument.
Summary of the invention
In view of this, the object of this invention is to provide a kind of multi-functional physics fiber communication experiment demonstration instrument, can reduce the situation of smooth horizontal plane to a great extent, student is helped to understand Newton first law, meanwhile, this demonstrator, can also probe into the law of conservation of mechanical energy and kinetic energy law.
The object of the invention is to be achieved through the following technical solutions:
Multi-functional physics fiber communication experiment demonstration instrument, comprise one section of arc-shaped guide rail and one section of horizontally disposed air track vertically arranged, described arc-shaped guide rail and air track are provided with bead rolling chute, described horizontal air track is also provided with bead induction installation, described horizontal air track is also provided with spring carrier arm away from the side of arc-shaped guide rail, described demonstrator also comprise be arranged on arc-shaped guide rail side for measure bead elemental height height gauge and be arranged on air track side for measuring the horizontal scale chi of bead horizontal displacement distance, described horizontal air cushion guide rail upper surface is also provided with multiple equally distributed air hole, described height gauge is a telescopic rule, what this rule can horizontally slip is arranged in a sliding rail, described sliding rail is arranged on the below of arc track and one end is connected with horizontal air track.
Further, described bead induction installation comprises photoresistance, not gate module, LED and single-chip microcomputer, and described LED one end is connected with photoresistance, the other end is connected with single-chip microcomputer, photoresistance other end Sheffer stroke gate is connected, and the other end of not gate is connected with single-chip microcomputer, forms closed-loop path.
Further, described single-chip microcomputer is STC89C52RC single-chip microcomputer.
Further, the Vcc port of described single-chip microcomputer is connected with switch, and switch is connected with the positive pole of the power supply of 5V, and the negative pole of the power supply of 5V is connected with the Gnd port of single-chip microcomputer.
Further, the bead rolling detent surface of described arc-shaped guide rail scribbles lubricious material.
Further, described horizontal scale chi is fixed on horizontal air track dead ahead.
Further, the outer end, right side of described air track is also provided with controller, and there are two buttons described controller outside, and one is air track switch, and two is LED gauge tap.
Further, the tail end of described horizontal air track is also provided with outtake tube, and described outtake tube is connected with source of the gas.
The invention has the beneficial effects as follows: structure of the present invention is simple, and easy to use, functional diversities, can probe into Newton first law, the law of conservation of mechanical energy, theorem of kinetic energy simultaneously.Make to obtain experimental data more succinct, accurately, improve the deficiency of dotted timer in senior middle school's textbook and paper tape test, this demonstrator is easy and simple to handle, and the mode that the tests the speed novelty of LED is interesting simultaneously.
Other advantages of the present invention, target and feature will be set forth to a certain extent in the following description, and to a certain extent, based on will be apparent to those skilled in the art to investigating hereafter, or can be instructed from the practice of the present invention.Target of the present invention and other advantages can be realized by instructions below and obtain.
Accompanying drawing explanation
In order to make the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, the present invention is described in further detail, wherein:
Fig. 1 is structural representation of the present invention;
Fig. 2 is cross-sectional view of the present invention;
Fig. 3 is circuit diagram of the present invention.
Embodiment
Hereinafter with reference to accompanying drawing, the preferred embodiments of the present invention are described in detail.Should be appreciated that preferred embodiment only in order to the present invention is described, instead of in order to limit the scope of the invention.
As shown in the figure, the demonstrator of the present embodiment comprises arc-shaped guide rail 1, height gauge 2, sliding rail 3, horizontal scale chi 4, horizontal air track 5, LED 6, controller 7, spring 8, inductor 9, single-chip microcomputer 10 and outtake tube 11.In actual use, probe into the demenstration method of Newton first law: at the fabric of horizontal air track internal layer upper surface paving unlike material, change the degree of roughness of guide rail.Bead is allowed to be rolled down by static from arc-shaped guide rail, the situation that the Distance geometry LED that observation bead moves on horizontal guide rail lights.Thereafter second group of contrast experiment is carried out.Remove the fabric of the horizontal air track degree of roughness of change, open air track switch, now the horizontal air track on the right is equivalent to smooth horizontal plane, and bead will do linear uniform motion.Rule before horizontal air track can measure the distance of object of which movement.The time interval of adjacent two LED lighted is certain, counts the LED lighted, can calculate the time of object of which movement.The size of the speed that object moves with uniform velocity can be calculated thus.
Probe into the demenstration method of the law of conservation of mechanical energy: by bead as somewhere on arc-shaped guide rail, utilize slip rule to measure height residing for bead, record.Open air track switch and LED gauge tap, by static for bead release.Bead does linear uniform motion on horizontal air track, utilizes LED lamp device to measure the movement velocity of bead.By, can the law of conservation of mechanical energy be verified.
In addition, the demenstration method of theorem of kinetic energy is probed into: open air track switch and LED gauge tap, a spring is fixed on hook place, bead Compress Spring, by static release.LED lamp device is utilized to measure the movement velocity of bead.Add a same spring again and be fixed on hook place, use the same method and measure bead speed.In like manner, the 3rd same spring is added.Spring each work is W, 2W, 3W, is namely obtained the relation of merit and speed by repetitive measurement.
What finally illustrate is, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from aim and the scope of the technical program, it all should be encompassed in the middle of right of the present invention.
Claims (8)
1. multi-functional physics fiber communication experiment demonstration instrument, it is characterized in that: comprise one section of arc-shaped guide rail and one section of horizontally disposed air track vertically arranged, described arc-shaped guide rail and air track are provided with bead rolling chute, described horizontal air track is also provided with bead induction installation, described horizontal air track is also provided with spring carrier arm away from the side of arc-shaped guide rail, described demonstrator also comprise be arranged on arc-shaped guide rail side for measure bead elemental height height gauge and be arranged on air track side for measuring the horizontal scale chi of bead horizontal displacement distance, described horizontal air cushion guide rail upper surface is also provided with multiple equally distributed air hole, described height gauge is a telescopic rule, what this rule can horizontally slip is arranged in a sliding rail, described sliding rail is arranged on the below of arc track and one end is connected with horizontal air track.
2. multi-functional physics fiber communication experiment demonstration instrument according to claim 1, it is characterized in that: described bead induction installation comprises photoresistance, not gate module, LED and single-chip microcomputer, described LED one end is connected with photoresistance, the other end is connected with single-chip microcomputer, photoresistance other end Sheffer stroke gate is connected, the other end of not gate is connected with single-chip microcomputer, forms closed-loop path.
3. multi-functional physics fiber communication experiment demonstration instrument according to claim 2, is characterized in that: described single-chip microcomputer is STC89C52RC single-chip microcomputer.
4. multi-functional physics fiber communication experiment demonstration instrument according to claim 2, it is characterized in that: the Vcc port of described single-chip microcomputer is connected with switch, and switch is connected with the positive pole of the power supply of 5V, the negative pole of the power supply of 5V is connected with the Gnd port of single-chip microcomputer.
5. multi-functional physics fiber communication experiment demonstration instrument according to claim 1, is characterized in that: the bead rolling detent surface of described arc-shaped guide rail scribbles lubricious material.
6. multi-functional physics fiber communication experiment demonstration instrument according to claim 1, is characterized in that: described horizontal scale chi is fixed on horizontal air track dead ahead.
7. multi-functional physics fiber communication experiment demonstration instrument according to claim 1, it is characterized in that: the outer end, right side of described air track is also provided with controller, there are two buttons described controller outside, and one is air track switch, and two is LED gauge tap.
8. multi-functional physics fiber communication experiment demonstration instrument according to claim 1, is characterized in that: the tail end of described horizontal air track is also provided with outtake tube, and described outtake tube is connected with source of the gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510274087.6A CN104835389A (en) | 2015-05-26 | 2015-05-26 | Multifunctional physical exploration experiment demonstration instrument |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510274087.6A CN104835389A (en) | 2015-05-26 | 2015-05-26 | Multifunctional physical exploration experiment demonstration instrument |
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| CN104835389A true CN104835389A (en) | 2015-08-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510274087.6A Pending CN104835389A (en) | 2015-05-26 | 2015-05-26 | Multifunctional physical exploration experiment demonstration instrument |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106370200A (en) * | 2016-10-11 | 2017-02-01 | 张远程 | Motion parameter measurement device of car |
| CN106568594A (en) * | 2017-01-03 | 2017-04-19 | 九牧厨卫股份有限公司 | Sliding door smoothness detection method and apparatus |
| CN107798967A (en) * | 2017-11-19 | 2018-03-13 | 李洪玉 | Conservation of mechanical energy validating instrument |
| CN112071170A (en) * | 2018-11-13 | 2020-12-11 | 施天霖 | Testing device for mechanics experiment |
| CN112863308A (en) * | 2021-01-27 | 2021-05-28 | 唐山学院 | Experimental device for verifying Newton's three-law |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87204064U (en) * | 1987-03-26 | 1988-03-30 | 文求林 | Momentum conservation instrument |
| CN201185049Y (en) * | 2007-12-24 | 2009-01-21 | 季倬 | Demonstration instrument for cockleshell-on momentum conservation phenomenon |
| CN202939869U (en) * | 2012-12-06 | 2013-05-15 | 吕家轩 | Teaching demonstration instrument for exploring conserved quantity in process of collision |
-
2015
- 2015-05-26 CN CN201510274087.6A patent/CN104835389A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87204064U (en) * | 1987-03-26 | 1988-03-30 | 文求林 | Momentum conservation instrument |
| CN201185049Y (en) * | 2007-12-24 | 2009-01-21 | 季倬 | Demonstration instrument for cockleshell-on momentum conservation phenomenon |
| CN202939869U (en) * | 2012-12-06 | 2013-05-15 | 吕家轩 | Teaching demonstration instrument for exploring conserved quantity in process of collision |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106370200A (en) * | 2016-10-11 | 2017-02-01 | 张远程 | Motion parameter measurement device of car |
| CN106370200B (en) * | 2016-10-11 | 2023-08-15 | 南京南华航空产业有限公司 | Motion parameter measuring device of vehicle |
| CN106568594A (en) * | 2017-01-03 | 2017-04-19 | 九牧厨卫股份有限公司 | Sliding door smoothness detection method and apparatus |
| CN107798967A (en) * | 2017-11-19 | 2018-03-13 | 李洪玉 | Conservation of mechanical energy validating instrument |
| CN112071170A (en) * | 2018-11-13 | 2020-12-11 | 施天霖 | Testing device for mechanics experiment |
| CN112863308A (en) * | 2021-01-27 | 2021-05-28 | 唐山学院 | Experimental device for verifying Newton's three-law |
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Application publication date: 20150812 |
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