CN206601859U - A kind of Multifunctional centripetal force demonstrator - Google Patents
A kind of Multifunctional centripetal force demonstrator Download PDFInfo
- Publication number
- CN206601859U CN206601859U CN201720303827.9U CN201720303827U CN206601859U CN 206601859 U CN206601859 U CN 206601859U CN 201720303827 U CN201720303827 U CN 201720303827U CN 206601859 U CN206601859 U CN 206601859U
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- China
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- cross bar
- centripetal force
- extension rod
- rotating shaft
- bar
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Abstract
The utility model proposes a kind of Multifunctional centripetal force demonstrator, to solve the problem of centripetal force is demonstrated in senior middle school's experiment.Including bottom plate, rotating shaft, the first cross bar, the second cross bar, quarter butt and cylindrical bar；The rotating shaft is rotatable to be perpendicularly fixed on bottom plate, rotating shaft is provided with the first cross bar, the second cross bar and quarter butt, first cross bar one end is provided with balanced body, the first cross bar other end is provided with plug, cylindrical bar is arranged with the first cross bar between plug and rotating shaft, cylindrical bar lower end is mutually fixed between being provided with extension rod by internal screw thread, and extension rod is flexibly connected with one end of quarter butt by spring, and one end of extension rod is provided with the through hole passed through for the second cross bar.The utility model demonstrates centripetal force to be combined with lever principle demonstration, and simple in construction, convenient access adds the interest of physics teaching.
Description
Technical field
The utility model is related to instruments used for education field, particularly relates to a kind of Multifunctional centripetal force demonstrator.
Background technology
In junior-senior high school physics teaching, often it is related to the knowledge point of centripetal force.Exist in current physics teaching in secondary school
Many difficult points, these difficult points understand for student on have difficulties, its main cause is exactly excessively abstract, not lively
On the basis of experiment or reality displaying, it is simple by physics law therein or physical equation it is very hard thrust student, student
It is beyond affordability, even if being forced to receive to make a profound impression, it can only at most accomplish only to know presentation, not study carefully principle, so that
It is difficult to understand in practice and applies.A difficult point among these is exactly centripetal force, and the formula of centripetal force is mv/r or mw2R, its
In m for carry out circular motion object quality, r is radius, and v is linear velocity, and w is angular speed, and teacher is talking about this chapter
When saving content, due to lacking corresponding apparatus for demonstrating, student is directly simply often told by the formula, here it is to
Mental and physical efforts formula, student also can only be to be forced to receive in the case of unapprehended, the effect so given lessons it is envisioned that with our institutes
The quality-oriented education advocated, Happy Education runs in the opposite direction completely, and final result is exactly that teacher has taken very great strength, is as a result learned
Raw again without understanding, the present invention is exactly directed to this and proposes one kind simply, vividly, and vivid centripetal force demonstration is real
Test, by the experiment, students can be allowed really to see the relation of centripetal force and quality, radius and speed three, so as to allow
Give birth to understanding quickly and remember the formula of centripetal force.
Utility model content
The utility model proposes a kind of Multifunctional centripetal force demonstrator, physical mechanics teaching demonstration in the prior art is solved
The problem of.
A kind of Multifunctional centripetal force demonstrator, including bottom plate, rotating shaft, the first cross bar, the second cross bar, quarter butt and cylindrical bar；
The rotating shaft is rotatable to be vertically installed on bottom plate, and rotating shaft is provided with the first cross bar, the second cross bar and quarter butt, first cross bar one end
Provided with balanced body, the other end is provided with plug, and the outside of plug, which is provided with retainer ring, the first cross bar, is arranged with cylindrical bar, cylindrical bar
Lower end is provided with extension rod, is threadedly coupled between cylindrical bar and extension rod, extension rod is flexibly connected with one end of quarter butt by spring,
One end of extension rod is provided with the through hole passed through for the second cross bar；The quarter butt is provided with spring tension meter.
First cross bar is provided with scale, and the junction of the first cross bar and rotating shaft is provided with fixing card, and the top of rotating shaft is also
Provided with rotating handle.
The weight of the weight and balance body of the cylindrical bar is identical, and balanced body is provided with attachment means.
The spring tension meter is supported the use with spring.
The plug is movably arranged on the first cross bar, and retainer ring is used for the position for fixing plug.
The beneficial effect that the technical program can be produced：Multifunctional centripetal force demonstrator of the present utility model, it is centripetal in progress
During power is demonstrated, extension rod is mutually fixed with cylindrical bar, spring is fixed on extension rod, then extension rod is sheathed on
On second cross bar, fixing card is opened, by controlling rotating handle to reach the purpose of control rotating speed manually, rotating handle, cylindrical bar is rotated
With the assembly of extension rod, under the influence of centrifugal force pull spring slide in and out, due to the setting of plug, assembly be difficult by
Throw away cross bar；When cylindrical bar is parallel with rotating shaft position, based on centripetal force F=mw2R formula, two are fixed by the utility model
Variable, such as：Pass through fixed cylinder bar and the quality m and rotating speed w of extension rod assembly, observation centripetal force F and radius r relation；
Relation between centrifugal force F, quality m, rotating speed w and radius r is judged according to centripetal force formula；Multifunctional centripetal of the present utility model
Power demonstrator can also be demonstrated lever principle, when carrying out lever principle demonstration, extension rod is taken off, because cylinder
Bar is identical with the weight of balanced body, and can increase weight by the attachment means in balanced body, by the first cross bar both sides can
Reading, can explain to lever principle, facilitate student to understand；Centripetal force demonstration is demonstrated and tied by the utility model with lever principle
Altogether, simple in construction, convenient access adds the interest of physics teaching.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is paid
The every other embodiment obtained, belongs to the scope of the utility model protection.
As shown in figure 1, a kind of Multifunctional centripetal force demonstrator, including bottom plate 1, rotating shaft 2, the first cross bar 9, the second cross bar 3,
Quarter butt 4 and cylindrical bar 10；The rotating shaft 2 is rotatable to be vertically installed on bottom plate 1, and rotating shaft 2 is horizontal provided with the first cross bar 9, second
Bar 3 and quarter butt 4, one end of the first cross bar 9 are provided with balanced body 5, and the other end is provided with plug 15, and the outside of plug 15 is provided with retainer ring
16, the plug 15 can be moved on the first cross bar 9, horizontal by the fixed position of retainer ring 16 located at the outside of plug 15, first
Cylindrical bar 10 is arranged with bar 9, the lower end of cylindrical bar 10 is provided with extension rod 12, is threadedly coupled between cylindrical bar 10 and extension rod 12,
Extension rod 12 is flexibly connected with one end of quarter butt 4 by spring 11, and one end of extension rod 12 was provided with for leading to that the second cross bar 3 is passed through
Hole；One end that the quarter butt 4 is connected with spring 11 is provided with the spring tension meter 13 supporting with spring 11.
Multifunctional centripetal force demonstrator of the present utility model, carry out centripetal force demonstration during, by extension rod 12 with
Cylindrical bar 10 is mutually fixed, and spring 11 is fixed on extension rod, and then extension rod 12 is sheathed on the second cross bar 2, opens solid
Surely 8 are blocked, now quick rotation rotating handle 6, the assembly of cylindrical bar 10 and extension rod 12 pulls spring under the influence of centrifugal force
11 slide in and out, due to the setting of plug 15, and assembly is difficult to be thrown out of cross bar, when cylindrical bar 10 is parallel with rotating shaft position, base
In centripetal force F=mw2R formula, fix two variables, such as by the utility model：Pass through 12 groups of fixed cylinder bar 10 and extension rod
Fit quality m and rotating speed w, observation centripetal force F and radius r relation；According to centripetal force formula judge centrifugal force F, quality m,
Relation between rotating speed w and radius r；Multifunctional centripetal force demonstrator of the present utility model can also be drilled lever principle
Show, when carrying out lever principle demonstration, extension rod 12 is taken off, because cylindrical bar 10 is identical with the weight of balanced body 5, and it is logical
Attachment means on overbalance body 5 can increase weight, by the readable of the both sides of the first cross bar 9, and lever principle can be solved
Release, facilitate student to understand；The utility model demonstrates centripetal force to be combined with lever principle demonstration, simple in construction, is conveniently deposited
Take, add the interest of physics teaching.
It is preferred that, above-mentioned first cross bar 9 is provided with scale, and the first cross bar 9 and the junction of rotating shaft 2 are provided with fixing card 8, turned
The top of axle 2 is provided with rotating handle 6.
It is preferred that, the weight of the weight and balance body 5 of above-mentioned cylindrical bar 10 is identical, and cylindrical bar 10 in balanced body 5 with being all provided with
There are attachment means, counterweight can be increased by attachment means, the weight to cylindrical bar 10 and balanced body 5 is adjusted respectively.
It is preferred that, above-mentioned spring tension meter 13 is supported the use with spring 11.
It is preferred that, above-mentioned plug 15 is movably arranged on the first cross bar 9, and retainer ring 16 is used for the position for fixing plug 15
Put.
Application method of the present utility model is as follows：During centripetal force demonstration is carried out, by extension rod 12 and cylindrical bar
10 are mutually fixed, and spring 11 is fixed on extension rod 12, and then extension rod 12 is sheathed on the second cross bar 2, open fixing card
8, by controlling rotating handle 6 to reach the purpose of control rotating speed manually, rotate and can be observed in rotating handle 6, the rotary course of rotating shaft 2
The extension of spring 11, and the elastic force of spring 11 can be directly observed by spring tension meter 13, rotating speed is faster, and the extension of spring 11 is got over
Greatly, the reading of spring tension meter 13 is bigger, based on centripetal force F=mw2R, the utility model can by the position of fixed plug 15,
The quality of stationary cylinder 10 and extension rod 12, reaches fixed m and r, when cylindrical bar 10 and extension rod 12 are in and shaft parallel
Position when, the reading of observation spring tension meter 13 judges centripetal force F and rotating speed w speeds relation；By fixed rotating speed w, adjust
The weight of pitch circle cylinder 10, when centripetal force F is identical, the relation of observation now between weight m and radius r；It is former carrying out lever
During reason demonstration, extension rod 12 is taken off, because cylindrical bar 10 is identical with the weight of balanced body 5 and weight-adjustable section, by the
The readable of the both sides of one cross bar 9, it is possible to find the rule of lever principle, develops the intelligence of student, increases the interest in classroom.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
Within the spirit and principle of utility model, any modification, equivalent substitution and improvements made etc. should be included in the utility model
Protection domain within.
Claims (5)
1. a kind of Multifunctional centripetal force demonstrator, it is characterised in that：Including bottom plate（1）, rotating shaft（2）, the first cross bar（9）, second
Cross bar（3）, quarter butt（4）And cylindrical bar（10）；The rotating shaft（2）It is rotatable to be vertically installed in bottom plate（1）On, rotating shaft（2）On set
There is the first cross bar（9）, the second cross bar（3）And quarter butt（4）, the first cross bar（9）One end is provided with balanced body（5）, the other end is provided with stifled
Head（15）, plug（15）Outside be provided with retainer ring（16）, the first cross bar（9）On be arranged with cylindrical bar（10）, cylindrical bar（10）
Lower end is provided with extension rod（12）, cylindrical bar（10）With extension rod（12）Between be threadedly coupled, extension rod（12）With quarter butt（4）One
End passes through spring（11）It is flexibly connected, extension rod（12）Lower end be provided with supply the second cross bar（3）The through hole passed through；The quarter butt
（4）It is provided with spring tension meter（13）.
2. Multifunctional centripetal force demonstrator as claimed in claim 1, it is characterised in that：First cross bar（9）Provided with quarter
Degree, the first cross bar（9）With rotating shaft（2）Junction be provided with fixing card（8）, rotating shaft（2）Top be provided with rotating handle（6）.
3. Multifunctional centripetal force demonstrator as claimed in claim 1, it is characterised in that：The cylindrical bar（10）Weight with it is flat
Weigh body（5）Weight it is identical, balanced body（5）It is provided with attachment means.
4. Multifunctional centripetal force demonstrator as claimed in claim 1, it is characterised in that：The spring tension meter（13）With spring
（11）Support the use.
5. Multifunctional centripetal force demonstrator as claimed in claim 1, it is characterised in that：The plug（15）In the first cross bar
（9）On be movably arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720303827.9U CN206601859U (en) | 2017-03-27 | 2017-03-27 | A kind of Multifunctional centripetal force demonstrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720303827.9U CN206601859U (en) | 2017-03-27 | 2017-03-27 | A kind of Multifunctional centripetal force demonstrator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206601859U true CN206601859U (en) | 2017-10-31 |
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ID=60145785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720303827.9U Expired - Fee Related CN206601859U (en) | 2017-03-27 | 2017-03-27 | A kind of Multifunctional centripetal force demonstrator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206601859U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107798969A (en) * | 2017-12-08 | 2018-03-13 | 王刚 | A kind of physics teaching centrifugal force demonstration device |
-
2017
- 2017-03-27 CN CN201720303827.9U patent/CN206601859U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107798969A (en) * | 2017-12-08 | 2018-03-13 | 王刚 | A kind of physics teaching centrifugal force demonstration device |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171031 Termination date: 20200327 |
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| CF01 | Termination of patent right due to non-payment of annual fee |