CN105206144B - Buoyancy experimental device and method for physics teaching - Google Patents
Buoyancy experimental device and method for physics teaching Download PDFInfo
- Publication number
- CN105206144B CN105206144B CN201510663762.4A CN201510663762A CN105206144B CN 105206144 B CN105206144 B CN 105206144B CN 201510663762 A CN201510663762 A CN 201510663762A CN 105206144 B CN105206144 B CN 105206144B
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- Prior art keywords
- bar
- buoyancy
- weight
- pole
- physics teaching
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Classifications
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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
- G09B23/12—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for statics or dynamics of liquids or gases
Abstract
The invention relates to a buoyancy experimental device and method for physics teaching. Experimental equipment for studying the magnitude of buoyancy in middle school physics is quite simple, operating is quite troublesome, visuality is bad, no experimental method is given clearly, a demonstrative experiment and a grouping experiment cannot be well completed, and the teaching effect is poor. The bottom ends of supporting rods are connected with an adjustable base, and the top ends of the supporting rods are connected with an adjusting device. The adjusting device is connected with weights, water tanks are placed under the weights, and the water tanks are filled with water or solutions. An overflowing opening is formed in the upper edge of each water tank, and a square cup is placed under each overflowing opening. The buoyancy experimental device and method are used for buoyancy experiments in physics teaching.
Description
Technical field
The present invention relates to a kind of buoyancy experiment device and experimental technique for physics teaching.
Background technology
The experiment equipment of the size of junior physicses research buoyancy is fairly simple, and operation is cumbersome, visual also bad, real
Proved recipe method is not also clearly given, lecture experiment and grouping experiment is all bad completes, and teaching efficiency is poor.
The content of the invention
It is an object of the invention to provide a kind of buoyancy experiment device and experimental technique for physics teaching, existing to solve
Buoyancy experiment troublesome poeration, it is visual bad, and the problem of teaching efficiency difference, and height and support angle can be adjusted.
Above-mentioned purpose is realized by following technical scheme：
A kind of buoyancy experiment device for physics teaching, its composition include：Tank 1, square cup 2, weight 3, pole 4,
The bottom connection adjustable frames of described pole 4, the top of described pole 4 connects adjusting means, described adjusting means
Weight 3 described in upper connection, described weight 3 below put described tank 1, load water or solution in described tank 1,
The upper edge of described tank 1 is provided with gap 5, and described square cup 2 is put in the lower section of described gap 5.
The described buoyancy experiment device for physics teaching, be connected on described pole 4 piece I 21 and stator II
22, central circular port 23 is provided with described stator I 21 and described stator II 22, described adjusting means includes
Rotating bar 24, described rotating bar 24 pass through described central circular port 23, connect band hook in described rotating bar 24
The collar 25, connects locating ring 26, connecting line 27 on described locating ring 26, the bottom of described line 27 in described rotating bar 24
Coupling hook 28, connecting spring ergometer 29 on described hook 28, the bottom of described weight beam 29 link up with connect band
The described weight 3 of link, one end of described rotating bar 24 connect Z-shaped handle 30, are provided with system on described stator II 22
Dynamic hole 31, loads brake club 8 in described brake hole 31.
The described buoyancy experiment device for physics teaching, described adjustable base include two support feets 6, adjust
Section disk 7 and elevating lever 9, the support feet 6 described in two are connected axle 11 by axle sleeve 10, connect institute in described fixing axle 11
The adjustment disk 7 stated, is provided with arc port I 12 and arc port II 13 on described adjustment disk 7, connect solid on described axle sleeve 10
Fixed pole 14, described fix bar 14 are moved on described arc port I 12, and described fix bar 14 is hollow stem, described
Fixed by N shapes locating clip 15 between fix bar 14 and described arc port II 13；Pass through in described fixing axle 11 described
Pole 4, load described elevating lever 9 in described pole 4, the outer surface of described pole 4 is provided with chute 16, described cunning
Load mobile bar 17 in groove 16, described mobile bar 17 connects the top of described elevating lever 9, and the both sides of described chute 16 are equal
Connection magnetic sheet 18, connection rotating shaft 19 in described mobile bar 17, the described connection Magnet 20 of rotating shaft 19, described Magnet 20 coordinate
Described magnetic sheet 18 is used.
The described buoyancy experiment device for physics teaching, described weight 3 include cylindrical iron block I, cylindrical ferrum
Block II, the cuboid iron block of three faces difference coupling hook, cylindrical aluminium block, the square framework with rubber membrane.
The described buoyancy experiment device for physics teaching, described square cup 2 are marked with scale.
The distance between the described buoyancy experiment device for physics teaching, described locating ring 26 are 5cm ~ 10cm.
Slide downward in pole 4 is first lifted by the experimental technique of the described buoyancy experiment device for physics teaching
Bar 9 is adjusted to the height for needing, and Magnet 20 is drawn onto the position of corresponding magnetic sheet 18, after adjusting the angle of two support feets 6, uses N
Shape locating clip 15 fixes arc port II 13 and fix bar 14；Rotating bar 24 is inserted into stator I 21 with stator II 22 again
In central circular port 23, then load brake club 8 in the brake hole 31 opened on stator II 22, line 27 is wrapped in into locating ring
On 26, on the hook of online 27 bottom connection, weight beam 29 is hung up, in the bottom hook connect band of weight beam 29
The weight 3 of link；The tank 1 that upper edge is provided with gap 5 is put in the underface of weight 3, by injection water or solution in tank 1,
The lower section of gap 5 is put with graduated square cup 2.
Beneficial effect：
1. the present invention can complete all important experiment of junior middle school's buoyancy teaching.
2. the weight beam of the present invention coordinates adjusting means to use cooperatively, and when can make reading, registration is stablized, and experiment is accurate
Really, it is easy to operate, the drawbacks of solving with portable weight beam, it is easy to which teacher explains and observation of students.
3. contrast experiment is provided while the present invention, reduce experiment number, it is not only simple to operate and visual good.
4. the elevating lever of the present invention coordinates magnetic sheet, Magnet and rotating shaft mobile bar to use, and can help adjust the angle of support feet
Degree, can make support more firm again.
5. the volume of direct metering liquid is facilitated with scale on the square cup of the present invention.
6. fixed by N shape locating clips between the fix bar of the present invention and arc port II, both can conveniently adjust support
The angle of foot, again can be with the good support feet of secured adjusted.
7. three faces of the present invention respectively coupling hook cuboid iron block can according to different experiments need be selected, fit
It is wide with scope.
8. the size of present invention research buoyancy and the relation of immersion depth, distinguish the cuboid ferrum of coupling hook using three faces
Block easily can be verified, it is ensured that experimental data it is accurate.
Description of the drawings：
Accompanying drawing 1 is the structural representation of the present invention.
Accompanying drawing 2 is adjustable base schematic diagram of the present invention.
Accompanying drawing 3 is structural representation of the present invention using bucket.
Accompanying drawing 4 is the schematic diagram that the single weight beam of the present invention is used.
Specific embodiment：
Embodiment 1
A kind of buoyancy experiment device for physics teaching, its composition include：Tank 1, square cup 2, weight 3, pole 4,
The bottom connection adjustable frames of described pole 4, the top of described pole 4 connects adjusting means, described adjusting means
Weight 3 described in upper connection, described weight 3 below put described tank 1, load water or solution in described tank 1,
The upper edge of described tank 1 is provided with gap 5, and described square cup 2 is put in the lower section of described gap 5.
Embodiment 2
The buoyancy experiment device for physics teaching described in embodiment 1, be connected on described pole 4 piece I 21 with
Stator II 22, is provided with central circular port 23, described regulation on described stator I 21 and described stator II 22
Device includes rotating bar 24, and described rotating bar 24 passes through described central circular port 23, connects in described rotating bar 24
The collar 25 with hook, connects locating ring 26, connecting line 27 on described locating ring 26, described line in described rotating bar 24
27 bottom coupling hook 28, connecting spring ergometer 29 on described hook 28, the bottom of described weight beam 29 are hung
Hook connects connect Z-shaped handle 30, described stator II 22 with the weight 3 described in link, one end of described rotating bar 24
On be provided with brake hole 31, load brake club 8 in described brake hole 31.
Embodiment 3
The buoyancy experiment device for physics teaching described in embodiment 1, described adjustable base include two
Spike 6, adjustment disk 7 and elevating lever 9, the support feet 6 described in two are connected axle 11 by axle sleeve 10, described fixing axle 11
Adjustment disk 7 described in upper connection, is provided with arc port I 12 and arc port II 13, described axle sleeve 10 on described adjustment disk 7
On be connected bar 14, described fix bar 14 is moved on described arc port I 12, and described fix bar 14 is hollow
Bar, is fixed by N shapes locating clip 15 between described fix bar 14 and described arc port II 13；In described fixing axle 11
Through described pole 4, in described pole 4, load described elevating lever 9, the outer surface of described pole 4 is provided with chute 16,
Load mobile bar 17 in described chute 16, described mobile bar 17 connects the top of described elevating lever 9, described chute 16
Both sides be all connected with magnetic sheet 18, connection rotating shaft 19 in described mobile bar 17, the described connection Magnet 20 of rotating shaft 19, described magnetic
Ferrum 20 coordinates described magnetic sheet 18 to use.
Embodiment 4
The buoyancy experiment device for physics teaching described in embodiment 1 or 3, described weight 3 include cylindrical iron block
Ith, cylindrical iron block II, the cuboid iron block of three faces difference coupling hook, cylindrical aluminium block, the square frame with rubber membrane
Frame.
Embodiment 5
The buoyancy experiment device for physics teaching described in embodiment 1, described square cup 2 are marked with scale.
Embodiment 6
The distance between the buoyancy experiment device for physics teaching described in embodiment 3, described locating ring 26 are 5cm
~10cm
Embodiment 7
Utilize the experimental technique of the buoyancy experiment device for physics teaching described in embodiment 1, first by pole 4 to
Lower slider elevating lever 9 is adjusted to the height for needing, and Magnet 20 is drawn onto the position of corresponding magnetic sheet 18, adjusts two support feets 6
After angle, arc port II 13 and fix bar 14 are fixed with N shapes locating clip 15；Again rotating bar 24 is inserted stator I 21 and consolidated
In the central circular port 23 of stator II 22, then load brake club 8 in the brake hole 31 opened on stator II 22, line 27 is twined
Be wound on locating ring 26, weight beam 29 is hung up on the hook of online 27 bottom connection, in the bottom of weight beam 29
The weight 3 of hook connect band link；The tank 1 that upper edge is provided with gap 5 is put in the underface of weight 3, by injection in tank 1
Water or solution, the lower section of gap 5 is put with graduated square cup 2.
Embodiment 8
The buoyancy experiment device for physics teaching described in embodiment 3,25 connecting spring of the collar that described band is linked up with
Ergometer 29, the bottom of described weight beam 29 link up with connecting rope 33, and the bottom of described rope 33 connects bucket 32, described
Bucket 32 is in the lower end of the gap 5 of described tank 1.
Slide downward elevating lever 9 in pole 4 is first adjusted to the height for needing, Magnet 20 is drawn onto into corresponding magnetic sheet 18
Position, after adjusting the angle of two support feets 6, fixes arc port II 13 and fix bar 14 with N shapes locating clip 15；To rotate again
In the central circular port 23 of the insertion of bar 24 stator I 21 and stator II 22, then the brake hole 31 opened on stator II 22
Interior loading brake club 8, line 27 is wrapped on locating ring 26, hangs up weight beam on the hook of online 27 bottom connection
29, in the weight 3 of the bottom connect band link of the hook of the connection of weight beam 29；The underface of weight 3 is put upper edge to open
There is the tank 1 of gap 5, by injection water or solution in tank 1, the collar 25 of connect band hook in rotating bar 24, with hook
25 connecting spring ergometer 29 of the collar, the bottom coupling hook of weight beam 29, described hook connect bucket 32 by rope 33,
Described bucket 32 is in the lower end of the gap 5 of described tank 1.
Embodiment 9
The size of the research buoyancy of embodiment 1 and the relation of fluid density：
Current embodiment require that control V rows are identical, change fluid density, measure buoyancy size；Using floating shown in embodiment 1
Power experimental provision, line is rolled onto in rotating bar completely, the brake club rotating bar that moves right braking, is filled in two square tanks respectively
Full water and ethanol, respectively hang a cylindrical iron block I under two demonstration weight beams, read gravity G, be moved to the left brake club,
Slowly rotate Z-shaped handle counterclockwise, until cylindrical iron block I is completely submerged in water and ethanol, braked using brake club, now
It is observed that V rows are identical in two square cups, read the numerical value F of two demonstration weight beams, according to F it is floating=G-F asked respectively
Go out buoyancy and be compared, you can draw：When V rows are identical, fluid density is bigger, and buoyancy is bigger.
Embodiment 10
The size of the research buoyancy of embodiment 1 and the relation of object density：
Current embodiment require that control fluid density is identical with V rows, changes object density, measure buoyancy size；Using enforcement
A kind of buoyancy experiment device shown in example 1, the present embodiment difference from Example 9 is：Water filled in two tanks all, two
Hang cylindrical iron block I and cylindrical aluminium block under individual demonstration weight beam respectively, remaining operation is same as Example 9, can draw
Conclusion：Buoyancy size is unrelated with object density.
Embodiment 11
The size of the research buoyancy of embodiment 1 and the relation of V rows：
As shown in figure 4, current embodiment require that control fluid density it is identical, change V row, measure buoyancy size；Using enforcement
A kind of buoyancy experiment device shown in example 1, fills water, hangs a cylindrical iron block I, read under demonstration weight beam in tank
The gravity G of weight beam, slowly rotates Z-shaped handle counterclockwise, during observation cylindrical iron block I is gradually immersed into water, bullet
The registration of spring ergometer is gradually reduced, according to F it is floating=G-F understands that F is floating and gradually increases that the V rows observed in square cup gradually increase,
Can draw：When fluid density is identical, V rows are bigger, and buoyancy is bigger.
Embodiment 12
The size and V things of the research buoyancy of embodiment 1（For measured weight）Relation：
As shown in figure 4, current embodiment require that control fluid density it is identical with V rows, change V things, measure buoyancy size；Utilize
A kind of buoyancy experiment device shown in embodiment 1, fills water in tank, hang a cylindrical iron block I, read under weight beam
Weight beam gravity G1, slowly rotates Z-shaped handle counterclockwise, until cylindrical iron block I is completely submerged in water, reads demonstration
Registration F1 of weight beam, slowly rotates Z-shaped handle clockwise, after cylindrical iron block I leaves the water surface, by cylindrical iron block
I changes the cylindrical iron block II that volume mass is both greater than cylindrical iron block I into, reads weight beam gravity G2, slow counterclockwise
Z-shaped handle is rotated, cylindrical iron block II is slowly immersed in water, until the water surface just reaches gap, now V rows are identical, read
Go out registration F2 of weight beam, compare FFloating 1=G1-F1 and FFloating 2=G2-F2, can draw：Buoyancy size is unrelated with V things.
Embodiment 13
The size of the research buoyancy of embodiment 1 and the relation of immersion depth：
As shown in figure 4, current embodiment require that control fluid density it is identical with V rows, change immersion depth, measure buoyancy big
It is little；Using a kind of buoyancy experiment device shown in embodiment 1, water in tank, is filled, weight selects coupling hook to be distinguished for three faces
Cuboid iron block, hang over the cuboid ferrum for distinguishing coupling hook on different hooks to measure three faces with weight beam in three times
Block, reads gravity G, and the cuboid iron block of three faces coupling hook respectively is slowly partly submerged in water, and ensures three immersions
VRowIt is identical, registration F is read, now the depth of three immersions is different, is respectively compared three FIt is floating=G-F, you can draw：Buoyancy is big
It is little with to be partly submerged in depth unrelated；On the basis of the third time experiment of the present embodiment, the rectangular of coupling hook is distinguished in three faces
Body iron block is submerged into different depth in water, it was observed that weight beam registration is constant, you can draw：Buoyancy size and submergence
It is unrelated.
Embodiment 14
1 demonstrating floating force Producing reason of embodiment：
As shown in figure 4, using the buoyancy experiment device shown in embodiment 1, filling in tank and hanging with water, weight beam
By the fully wrapped around square framework firmly of rubber membrane, allow square framework to be slowly partly submerged in and water is immersed in slow whole
In, while observing the sinking degree of the rubber membrane in 6 faces, you can draw：Buoyancy be surrounding liquid to object up and down
Pressure differential, while can also be observed that upward pressure be produce buoyancy key.
Embodiment 15
Embodiment 1 verifies Archimedes principle：
Buoyancy experiment device as shown in Figure 3, fills water in tank（Ethanol）, read II heavy G of cylindrical iron blockFerrumWith bucket weight
GBucket, cylindrical iron block II is slowly immersed in into water（Ethanol）Middle different depth, record it is multigroup be partly submerged in registration F during submergence and
GBucket+water, you can while drawing FIt is floating=GFerrum- F and GRow=GBucket+water-GBucket, compare FIt is floatingAnd GRow, just it is able to verify that Archimedes principle.
Certainly, described above is not limitation of the present invention, and the present invention is also not limited to the example above, this technology neck
Change, remodeling, addition or replacement that the technical staff in domain is made in the essential scope of the present invention, should also belong to the present invention's
Protection domain.
Claims (4)
1. a kind of buoyancy experiment device for physics teaching, its composition include：Tank（1）, square cup（2）, weight（3）,
Bar（4）, it is characterized in that：Described pole（4）Bottom connection adjustable frames, described pole（4）Top connection adjust
Device, connects described weight in described adjusting means（3）, described weight（3）Lower section put described tank（1）,
Described tank（1）Interior loading water or solution, described tank（1）Upper edge be provided with gap（5）, described gap（5）
Lower section put described square cup（2）, described adjustable base includes two support feets（6）, adjustment disk（7）With lifting
Bar（9）, the support feet described in two（6）By axle sleeve（10）Be connected axle（11）, described fixing axle（11）Upper connection institute
The adjustment disk stated（7）, described adjustment disk（7）On be provided with arc port I（12）With arc port II（13）, described axle sleeve
（10）On be connected bar（14）, described fix bar（14）In described arc port I（12）Upper movement, described fix bar
（14）For hollow stem, described fix bar（14）With described arc port II（13）Between pass through N shape locating clips（15）It is fixed；
Described fixing axle（11）On through described pole（4）, described pole（4）Elevating lever described in interior loading（9）, it is described
Pole（4）Outer surface be provided with chute（16）, described chute（16）Interior loading mobile bar（17）, described mobile bar（17）Even
Connect described elevating lever（9）Top, described chute（16）Both sides be all connected with magnetic sheet（18）, described mobile bar（17）On
Connection rotating shaft（19）, described rotating shaft（19）Connection Magnet（20）, described Magnet（20）Coordinate described magnetic sheet（18）Use.
2. the buoyancy experiment device for physics teaching according to claim 1, is characterized in that：Described pole（4）On
Be connected piece I（21）With stator II（22）, described stator I（21）With described stator II（22）On be provided with
Heart circle port（23）, described adjusting means includes rotating bar（24）, described rotating bar（24）Through described center circle
Shape port（23）, described rotating bar（24）The collar of upper connect band hook（25）, described rotating bar（24）Upper connection positioning
Ring（26）, described locating ring（26）Upper connecting line（27）, described line（27）Bottom coupling hook（28）, described hook
（28）Upper connecting spring ergometer（29）, described weight beam（29）Bottom link up with connect band link described weight
（3）, described rotating bar（24）One end connect Z-shaped handle（30）, described stator II（22）On be provided with brake hole（31）,
Described brake hole（31）Interior loading brake club（8）.
3. the buoyancy experiment device for physics teaching according to claim 1, is characterized in that：Described weight（3）Bag
Include cylindrical iron block I, cylindrical iron block II, the cuboid iron block of three faces difference coupling hook, cylindrical aluminium block, with rubber membrane
Square framework.
4. the buoyancy experiment device for physics teaching according to claim 1, is characterized in that：Described square cup（2）
It is marked with scale.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510663762.4A CN105206144B (en) | 2015-10-15 | 2015-10-15 | Buoyancy experimental device and method for physics teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510663762.4A CN105206144B (en) | 2015-10-15 | 2015-10-15 | Buoyancy experimental device and method for physics teaching |
Publications (2)
| Publication Number | Publication Date |
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| CN105206144A CN105206144A (en) | 2015-12-30 |
| CN105206144B true CN105206144B (en) | 2017-04-12 |
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| CN201510663762.4A Expired - Fee Related CN105206144B (en) | 2015-10-15 | 2015-10-15 | Buoyancy experimental device and method for physics teaching |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108682242A (en) * | 2018-04-03 | 2018-10-19 | 蚌埠科睿达机械设计有限公司 | A kind of physics facility |
| CN110197608A (en) * | 2018-02-26 | 2019-09-03 | 孙旭春 | A kind of buoyancy experiment device and experimental method for physics teaching |
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| CN109166420B (en) * | 2016-08-17 | 2021-03-23 | 苏州固特斯电子科技有限公司 | Buoyancy demonstration teaching aid |
| CN106097844B (en) * | 2016-08-17 | 2019-01-01 | 温州贝尔教仪有限公司 | Buoyancy demonstration teaching aid |
| CN106057034B (en) * | 2016-08-25 | 2019-06-14 | 南京牧信科技有限公司 | Buoyancy teaching demonstration structure |
| CN107633745A (en) * | 2017-11-01 | 2018-01-26 | 苏畅 | A kind of buoyancy experiment equipment for physics teaching |
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| CN201508643U (en) * | 2009-06-27 | 2010-06-16 | 湖州师范学院 | Archimedes' law teaching instrument |
| CN204010447U (en) * | 2014-09-01 | 2014-12-10 | 王颖霞 | A kind of teaching Buoyancy demonstration instrument |
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| CN105206144A (en) | 2015-12-30 |
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