CN204576911U - Move in a circle the critical problem demonstrating experiment device of little ball warp lighter bar peak - Google Patents
Move in a circle the critical problem demonstrating experiment device of little ball warp lighter bar peak Download PDFInfo
- Publication number
- CN204576911U CN204576911U CN201520303972.8U CN201520303972U CN204576911U CN 204576911 U CN204576911 U CN 204576911U CN 201520303972 U CN201520303972 U CN 201520303972U CN 204576911 U CN204576911 U CN 204576911U
- Authority
- CN
- China
- Prior art keywords
- bead
- bar
- lighter
- circle
- peak
- 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.)
- Expired - Fee Related
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Abstract
The utility model announces a kind of critical problem demonstrating experiment device of the little ball warp lighter bar peak that moves in a circle, at least comprise base (1), support (2), cross bar (3), bearing (4), lighter bar (5), bead (6), support (2) is arranged on base (1); Cross bar (3) is fixed on support (2); The inner ring of bearing (4) is locked on cross bar (3); One end of lighter bar (5) is welded on the outer ring of bearing (4), other end welding bead (6) of lighter bar (5); Lighter bar (5) is lightweight thin metal rod that can be soldered; Bead (6) is steel ball that can be soldered.The utility model stirs the size of the power of bead by controlling finger, and the speed that bead is moved in a circle through peak in vertical plane is close to zero, namely just can the situation of peak.
Description
Technical field
The utility model relates to a kind of teaching equipment, the experimental demonstration that the critical problem being specifically applicable to move in a circle little ball warp lighter bar peak is analyzed.
Background technology
In senior middle school physics teaching, about the analysis of the critical problem of the little ball warp lighter bar peak that moves in a circle, the demonstrating experiment device that laboratory is not ready-made.In teaching, teacher can only explain in theory, and a bead is fixed in one end of lightweight thin bar, and bead does the circular motion in vertical plane around the other end of bar, bead through the critical velocity of bar peak be zero.To student, why the critical velocity of peak crossed by ball can be zero, is but very difficult to understand, if there is an experimental provision can demonstrate this problem preferably, highly beneficial student is understood this problem.
Utility model content
The purpose of this utility model is the experimental provision that making one is new, provides a kind of critical problem analysis design mothod apparatus for demonstrating demonstrating the little ball warp lighter bar peak that moves in a circle well.
For achieving the above object, the critical problem demonstrating experiment device of the little ball warp lighter bar peak that moves in a circle that the utility model proposes, its structure comprises: base, support, cross bar, bearing, lighter bar, bead, and described support installing is on base plate; Described cross bar is fixed on support; The inner ring of described bearing is locked on cross bar; One end of described lighter bar is welded on the outer ring of bearing, the other end welding bead of lighter bar.Described lighter bar is lightweight thin metal rod that can be soldered.Described bead is steel ball that can be soldered.
The utility model compared to existing technologies, has the following advantages: stir the size of the power of bead by controlling finger, and the speed that bead is moved in a circle through peak in vertical plane is close to zero, namely just can the situation of mistake peak.
Accompanying drawing explanation
Accompanying drawing is the structural representation that the utility model executes example.
1: base; 2: support; 3: cross bar; 4: bearing; 5: lighter bar; 6: bead.
Embodiment
The critical problem demonstrating experiment device of the little ball warp lighter bar peak that moves in a circle that the utility model proposes, its structure comprises: base 1, support 2, cross bar 3, bearing 4, lighter bar 5, bead 6, and described support 2 is arranged on base 1; Described cross bar 3 is fixed on support 2; The inner ring of described bearing 4 is locked on cross bar 3; One end of described lighter bar 5 is welded on the outer ring of bearing 4, the other end welding bead 6 of lighter bar 5.Described lighter bar 5 is lightweight thin metal rod that can be soldered.Described bead 6 is steel ball that can be soldered.
Using method of the present utility model:
Be held in the top of support with the right hand and stretch out forefinger, first bead upwards forwarded to highest point with left hand and rely on the forefinger stretched out, again left hand is pinned base, then after stirring bead forward with right hand forefinger, at once the right hand is taken from support, at this moment, bead under the stirring of forefinger around taking bearing as the circular motion that the center of circle does in vertical plane.Control finger and stir the size of the power of bead, the speed that bead is moved in a circle through peak in vertical plane is close to zero, namely just can the situation of mistake peak.
By above-mentioned experiment, student can observe bead well can with the speed close to zero through the highest situation, and the critical velocity also just well understanding the little ball warp lighter bar peak that moves in a circle is the problem of zero.
Claims (1)
1. move in a circle the critical problem demonstrating experiment device of little ball warp lighter bar peak, at least comprise base (1), support (2), cross bar (3), bearing (4), lighter bar (5), bead (6), it is characterized in that: described support (2) is arranged on base (1); Described cross bar (3) is fixed on support (2); The inner ring of described bearing (4) is locked on cross bar (3); One end of described lighter bar (5) is welded on the outer ring of bearing (4), other end welding bead (6) of lighter bar (5); Described lighter bar (5) is lightweight thin metal rod that can be soldered; Described bead (6) is steel ball that can be soldered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520303972.8U CN204576911U (en) | 2015-05-11 | 2015-05-11 | Move in a circle the critical problem demonstrating experiment device of little ball warp lighter bar peak |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520303972.8U CN204576911U (en) | 2015-05-11 | 2015-05-11 | Move in a circle the critical problem demonstrating experiment device of little ball warp lighter bar peak |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204576911U true CN204576911U (en) | 2015-08-19 |
Family
ID=53869515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520303972.8U Expired - Fee Related CN204576911U (en) | 2015-05-11 | 2015-05-11 | Move in a circle the critical problem demonstrating experiment device of little ball warp lighter bar peak |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204576911U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106297498A (en) * | 2015-05-11 | 2017-01-04 | 张阁 | Move in a circle the critical problem demonstrating experiment device of little ball warp lighter bar peak |
-
2015
- 2015-05-11 CN CN201520303972.8U patent/CN204576911U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106297498A (en) * | 2015-05-11 | 2017-01-04 | 张阁 | Move in a circle the critical problem demonstrating experiment device of little ball warp lighter bar peak |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150819 Termination date: 20190511 |