CN105654816A - Gravity and friction relationship test device - Google Patents
Gravity and friction relationship test device Download PDFInfo
- Publication number
- CN105654816A CN105654816A CN201610043833.5A CN201610043833A CN105654816A CN 105654816 A CN105654816 A CN 105654816A CN 201610043833 A CN201610043833 A CN 201610043833A CN 105654816 A CN105654816 A CN 105654816A
- Authority
- CN
- China
- Prior art keywords
- gravity
- container
- frictional force
- column
- container cover
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Algebra (AREA)
- Pure & Applied Mathematics (AREA)
- Educational Administration (AREA)
- Computational Mathematics (AREA)
- Business, Economics & Management (AREA)
- Educational Technology (AREA)
- Theoretical Computer Science (AREA)
- Instructional Devices (AREA)
Abstract
The invention discloses a gravity and friction relationship test device. The device comprises a support device installed on a stand column, a gravity device placed on a light pull sheet and a variable force device assembled on a pedestal. The support device comprises a support sheet, a light pull sheet, a bayonet and a fastening bolt. The gravity device comprises a container, a container cover and a magnet. The variable force device comprises an electromagnet, a slide rheostat, a power supply, a switch, a slip sheet and a wire. Left block needle and right block needle are symmetrically arranged on the support sheet of the support device. A container cover button, a container cover thread and a container cover hole are formed on the container cover. According to the invention, the gravity and friction relationship test device has the advantages that test purpose is achieved, the structure is simple, the effect is visual, the stability is good, the repeatability is strong, the conclusion is clear and the physical knowledge learning of students is facilitated.
Description
Technical field
The present invention relates to a kind of Physical Experiment technology, especially relate to a kind of gravity and frictional force relation experimental technique.
Background technology
Middle school's physics elaborates when discussing gravity and frictional force; The power that object is subject to due to the attraction of the earth is called gravity, the power of relative motion of object (or relative motion trend) is hindered to be called frictional force, this is two important basic concepts, inevitable quantitative relation is not had between these two physical quantitys, the power of relation is had to be pressure with frictional force, middle school student's more difficult differentiation when learning the relation about gravity and frictional force, it is easy to think by mistake and there is certain quantitative relation between gravity and frictional force, causes the deviation in the understanding of middle school mechanical knowledge.
Relate in frictional force and gravity relationship experimental technique existing, " a kind of physical experiments research tester " of such as application number 201420425405.5 be inner to be mentioned " main purpose of the present utility model be to provide a kind of can the gravity of test object, the obliquity of PVvalue testing plate can be regulated, such that it is able to calculate frictional coefficient ", owing to different substances is all different at the coefficientoffriction�� of different surfaces, calculation formula F=�� N according to frictional force, learn coefficientoffriction��=F/N, here N is pressure, the utility model technology has obscured the relation of gravity and pressure, simultaneously, water vat is placed in the experimental apparatus in classroom by structure of the present utility model, difficulty has concrete operability.
According to the implication of gravity in physics and frictional force, the present invention proposes a kind of gravity and frictional force relation experimental installation, this technology can improve student to the cognitive ability of important concept.
Summary of the invention
Gravity is distinguished and frictional force is the physical conception of two different in kinds in order to strengthen student, inevitable quantitative relation is not had between these two physical quantitys, improve student to the cognitive ability of important concept, the present invention proposes a kind of gravity and the technology of frictional force relation experimental installation.
In order to realize above-mentioned purpose, the technical scheme of the present invention is as follows.
A kind of gravity and frictional force relation experimental installation, comprise the bracing or strutting arrangement being installed on column, be positioned over the variable force device that lightweight is drawn the gravity installation on sheet and is assembled on pedestal: described bracing or strutting arrangement, comprise blade, lightweight draw sheet, bayonet socket and holding bolt.
Described gravity installation, comprises container, container cover, magnet.
Described variable force device, comprises electromagnet, slip varistor, power supply, switch, slide plate, wire.
Being provided with symmetrical left shelves pin and right shelves pin in a blade of described bracing or strutting arrangement, the lightweight of described bracing or strutting arrangement draws sheet to be provided with draw ring, described column, is placed on pedestal, and the upper end of column is provided with crossbeam.
Described mark pointer set is loaded on column.
Described container cover, is provided with container cover knob, container cover screw thread, container cap bore.
Being carved with equidistant scale on described wall of container, the arranged outside suitable for reading of container has outside screw, and the container cover screw thread in described container cover is internal thread.
Described pedestal, column, crossbeam composition support.
The magnetic pole of the magnetic pole of the lower end of the magnet arranged in further container and the rear upper end of electromagnet energising is magnetic pole of the same name.
Its top of shelves pin of the symmetry that a blade of described bracing or strutting arrangement is arranged is sharp pointed.
Described electromagnet, slip varistor, power supply, switch, slide plate, wire can form loop line after connecting.
The useful effect of the present invention is: owing to have employed said structure, by providing a kind of gravity and frictional force relation experimental installation, the understanding of strengthening student's counterweight power and frictional force relation, it is to increase to the cognitive ability of important concept, the present invention is while realizing experiment purpose, there is structure simple, effect is directly perceived, good stability, repeatable strong, conclusion is clear, is conducive to the advantage that physical knowledge is learnt by student.
Accompanying drawing explanation
Fig. 1 is the structural representation of the experimental installation in the embodiment of the present invention.
Fig. 2 is the structural representation of the bracing or strutting arrangement in the embodiment of the present invention.
Fig. 3 is the structural representation of the container cover in the embodiment of the present invention.
Description of symbols in figure: 1, bracing or strutting arrangement; 2, gravity installation; 3, variable force device; 4, column; 5, crossbeam; 6, pedestal; 7, blade is propped up; 8, lightweight draws sheet; 9, bayonet socket; 10, holding bolt; 11, container; 12, container cover; 13, magnet; 14, pointer is indicated; 15, electromagnet; 16, slip varistor; 17, power supply; 18, switch; 19, slide plate; 20, wire; 21, left shelves pin; 22, right shelves pin; 23, draw ring; 24, support; 25, container cover button; 26, container cover screw thread; 27, container cap bore; 28, ergometer is hung; 29, ergometer.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described, better to understand the present invention.
Embodiment
Gravity as shown in Figure 1 and frictional force relation experimental installation, comprise the bracing or strutting arrangement 1 being installed on column 4, is positioned over the variable force device 3 that lightweight is drawn the gravity installation 2 on sheet 8 and is assembled on pedestal 6; A blade 7 for bracing or strutting arrangement 1 holds up lightweight and draws sheet 8, and the bayonet socket 9 that blade 7 side is arranged is installed on column 4, blocks tightly by holding bolt 10 by bayonet socket 9 simultaneously; The top of the container 11 of gravity installation 2 arranges container cover 12, and container 11 inside arranges magnet 13; Being slip varistor 16 on the downside of the electromagnet 15 of variable force device 3, slip varistor 16 is made up of power supply 17, switch 18, slide plate 19, wire 20; Column 4 is placed on pedestal 6, and the upper end of column 4 is provided with crossbeam 5, and mark pointer 14 is assembled on column 4.
As shown in Figure 2, a blade 7 of bracing or strutting arrangement 1 being provided with symmetrical left shelves pin 21 and right shelves pin 22, the lightweight of bracing or strutting arrangement 1 draws sheet 8 to be provided with draw ring 23.
As shown in Figure 3, container cover 12 is provided with container cover button 25, container cover screw thread 26, container cap bore 27.
When using a kind of gravity of this device and frictional force relation experimental installation to carry out the experiment demonstrating the relation of gravity and frictional force, concrete operation method is as follows:
By pedestal 6, column 4, crossbeam 5 form support 24, and adjustment pedestal 6, to horizontality, makes column 4 vertical with pedestal 6, place lightweight and draw sheet 8 between the left shelves pin 21 propped up in blade 7 and right shelves pin 22, and a blade 7 supports lightweight and draws sheet 8.
First with hang ergometer 28 measuring vessel 11 gravity be G1, after recording gravity, container 11 from suspension ergometer 28 take off, be placed on lightweight and draw on sheet 8.
After container 11 is stable, container 11 is write down the position that mark pointer 14 points to.
At the uniform velocity pulling lightweight to draw sheet 8 with ergometer 29, reading frictional force now is f1, completes the experiment of first time data gathering.
Secondly close switch 18, power supply 17, slip varistor 16, electromagnet 15, switch 18, wire 20 form loop line, and electromagnet 15 has magnetic.
The slide plate 19 of adjustment slip varistor 16, suitably increases the magnetic of electromagnet 15 magnetic pole.
Container 11 bottom magnet 13 is under electromagnet 15 same pole repulsive interaction, make container 11 upwards just leave lightweight and draw sheet 8, in this operation, the quality m of container 11 does not become, the gravity acceleration g in same place is constant, the gravity G2 now that is easy to get is equal with the numerical value of gravity G1 in preceding paragraph operation, writes down the gravity G2 in this time operation.
After container 11 is stable, at the uniform velocity pulling lightweight to draw sheet 8 with ergometer 29, the frictional force f2 now that is easy to get levels off to zero, completes the experiment of second time data gathering.
Then continuing adjustment slide plate 19, make electromagnet 15 have bigger magnetic, container 11 bottom magnet 13, under electromagnet 15 same pole repulsive interaction, drives container 11 upwards to suspend.
Keep this kind of suspended state, by container cap bore 27 to container 11 li of appropriate water fillings, along with the increase of water injection rate, container 11 moves down under gravity, mark pointer 14 is pointed to gradually made marks for the first time, treat that mark pointer 14 and first time are made marks and it is in same level position, stop water filling.
After container 11 is stable, third time at the uniform velocity pulls sheet 8, and correspondingly reading frictional force now is f3.
Drawing from lightweight and take off container 11 sheet 8, the total force measuring now container 11 with ergometer 28 is G3, completes the experiment of third time data gathering.
Collection experimental data is complete, oppositely the slide plate 19 of mobile slip varistor 16, cut-off switch 18, and container 11 recovers beginning state, arranges experiment equipment.
The experimental data that relatively above three times gather; Gravity G1 and frictional force f1, gravity G2 and frictional force f2, gravity G3 and frictional force f3.
Analyze obtain in experimentation G1, G2, G3 frictional force f1 corresponding with it, f2, f3 there is no inevitable quantitative relation, induction and conclusion is to clear, clear and definite conclusion; Gravity and frictional force are the physical conceptions of two different in kinds, do not have inevitable quantitative relation between these two physical quantitys.
Above-described upper and lower, left and right, forward and backward position relation is all relative position, does not refer to their absolute location, enough can not limit the technical scheme of the present invention.
The above is the preferred embodiment of the present invention; it is noted that for those skilled in the art, under the premise without departing from the principles of the invention; can also making some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.
Claims (8)
1. a gravity and frictional force relation experimental installation, it is characterised in that: comprise the bracing or strutting arrangement (1) being installed on column (4), the variable force device (3) being positioned over lightweight and drawing the gravity installation (2) on sheet (8) and be assembled on pedestal (6); A blade (7) of bracing or strutting arrangement (1) holds up lightweight and draws sheet (8), and the bayonet socket (9) that blade (7) side is arranged is installed on column (4), simultaneously by holding bolt (10) by tight for bayonet socket (9) card; The top of the container (11) of gravity installation (2) arranges container cover (12), and container (11) inside arranges magnet (13); Electromagnet (15) downside of variable force device (3) is slip varistor (16), and slip varistor (16) is made up of power supply (17), switch (18), slide plate (19), wire (20); Column (4) is placed on pedestal (6), and the upper end of column (4) is provided with crossbeam (5), and mark pointer (14) is assembled on column (4).
2. a kind of gravity according to claim 1 and frictional force relation experimental installation, it is characterised in that: described gravity installation (2), comprises container (11), container cover (12), magnet (13).
3. a kind of gravity according to claim 1 and frictional force relation experimental installation, it is characterized in that: described variable force device (3), comprise electromagnet (15), slip varistor (16), power supply (17), switch (18), slide plate (19), wire (20).
4. a kind of gravity according to claim 1 and frictional force relation experimental installation, it is characterised in that: a blade (7) of described bracing or strutting arrangement (1) is provided with symmetrical left shelves pin (21) and right shelves pin (22).
5. a kind of gravity according to claim 1 and frictional force relation experimental installation, it is characterised in that: the lightweight of described bracing or strutting arrangement (1) draws sheet (8) to be provided with draw ring (23).
6. a kind of gravity according to claim 1 and frictional force relation experimental installation, it is characterised in that: described column (4) is placed on pedestal (6), and the upper end of column (4) is provided with crossbeam (5).
7. a kind of gravity according to claim 1 and frictional force relation experimental installation, it is characterised in that: described mark pointer (14) is assembled on column (4).
8. a kind of gravity according to claim 2 and frictional force relation experimental installation, it is characterised in that: described container cover (12) is provided with container cover button (25), container cover screw thread (26), container cap bore (27).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610043833.5A CN105654816A (en) | 2016-01-22 | 2016-01-22 | Gravity and friction relationship test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610043833.5A CN105654816A (en) | 2016-01-22 | 2016-01-22 | Gravity and friction relationship test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105654816A true CN105654816A (en) | 2016-06-08 |
Family
ID=56486420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610043833.5A Pending CN105654816A (en) | 2016-01-22 | 2016-01-22 | Gravity and friction relationship test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105654816A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109677646A (en) * | 2019-02-14 | 2019-04-26 | 周睿阳 | A kind of magnetic suspension support turntable |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87204227U (en) * | 1987-05-16 | 1988-04-06 | 文求林 | Multipurpose mechanics experimental instrument |
| CN2687764Y (en) * | 2003-12-11 | 2005-03-23 | 李彤 | Static-dynamic friction force demonstrating instrument |
| CN103335942A (en) * | 2013-07-08 | 2013-10-02 | 大连理工大学 | Equipment and method used for measuring friction coefficient between plastic and metal mold |
| CN204010457U (en) * | 2014-07-20 | 2014-12-10 | 柳州师范高等专科学校 | The strong and weak experiment instrument of electromagnet magnetic |
| CN204143708U (en) * | 2014-11-21 | 2015-02-04 | 张文堂 | One probes into friction force rule detection instrument |
| CN204556148U (en) * | 2015-05-06 | 2015-08-12 | 吴笛 | A kind of physics teaching friction measurement device |
| WO2015138699A1 (en) * | 2014-03-12 | 2015-09-17 | The Procter & Gamble Company | Toothbrush-demonstration device and system |
-
2016
- 2016-01-22 CN CN201610043833.5A patent/CN105654816A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87204227U (en) * | 1987-05-16 | 1988-04-06 | 文求林 | Multipurpose mechanics experimental instrument |
| CN2687764Y (en) * | 2003-12-11 | 2005-03-23 | 李彤 | Static-dynamic friction force demonstrating instrument |
| CN103335942A (en) * | 2013-07-08 | 2013-10-02 | 大连理工大学 | Equipment and method used for measuring friction coefficient between plastic and metal mold |
| WO2015138699A1 (en) * | 2014-03-12 | 2015-09-17 | The Procter & Gamble Company | Toothbrush-demonstration device and system |
| CN204010457U (en) * | 2014-07-20 | 2014-12-10 | 柳州师范高等专科学校 | The strong and weak experiment instrument of electromagnet magnetic |
| CN204143708U (en) * | 2014-11-21 | 2015-02-04 | 张文堂 | One probes into friction force rule detection instrument |
| CN204556148U (en) * | 2015-05-06 | 2015-08-12 | 吴笛 | A kind of physics teaching friction measurement device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109677646A (en) * | 2019-02-14 | 2019-04-26 | 周睿阳 | A kind of magnetic suspension support turntable |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105206144A (en) | Buoyancy experimental device and method for physics teaching | |
| CN207300809U (en) | A kind of surface tension of liquid dynamic measurement device | |
| CN204102393U (en) | A kind of bernoulli principle apparatus for demonstrating | |
| CN105654816A (en) | Gravity and friction relationship test device | |
| CN202956965U (en) | Archimedes principle tester | |
| CN208848454U (en) | Archimedes' principle apparatus for demonstrating | |
| CN213987973U (en) | Demonstration device for physics experiments | |
| CN203490873U (en) | Electrodynamic type frictional force demonstration apparatus | |
| GB725252A (en) | Improvements in or relating to the measurement of the viscosity of a liquid | |
| CN202929916U (en) | Acting force and counterforce demonstration device | |
| CN209028921U (en) | A kind of resonance demonstration instrument device | |
| CN204926624U (en) | Buoyancy demonstrating device | |
| CN204143708U (en) | One probes into friction force rule detection instrument | |
| CN206726588U (en) | A kind of adjustable high-precision lever used for physics | |
| CN207352831U (en) | A kind of mechanics apparatus for demonstrating for Physical Experiment | |
| CN203013071U (en) | Demonstrator for overweight and weightlessness | |
| CN202049646U (en) | Two-force equilibrium research device | |
| CN201607852U (en) | Demonstrator of uniform linear motion of object | |
| CN206864042U (en) | A kind of physics teaching spring force demonstration device | |
| CN204406828U (en) | A kind of physics Multifunctional teaching aid | |
| CN110599873A (en) | Teaching device for measuring magnetic distance and magnetic force | |
| CN2404111Y (en) | Magnetic measuring balance | |
| CN203118300U (en) | Demonstration teaching aid for mechanics teaching | |
| CN201237849Y (en) | Joule law demonstrator | |
| CN220604200U (en) | Primary school science electro-magnet presentation device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160608 |