CN206711460U - A kind of demonstrator for teaching free falling body - Google Patents
A kind of demonstrator for teaching free falling body Download PDFInfo
- Publication number
- CN206711460U CN206711460U CN201720281886.0U CN201720281886U CN206711460U CN 206711460 U CN206711460 U CN 206711460U CN 201720281886 U CN201720281886 U CN 201720281886U CN 206711460 U CN206711460 U CN 206711460U
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- Prior art keywords
- vacuum tube
- electromagnet
- falling body
- vacuum
- demonstrator
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Abstract
The utility model discloses a kind of demonstrator for teaching free falling body, including support, vacuum tube, electromagnet, power supply, switch and demonstration object, the vacuum tube is made up of transparent material, inside has vacuum chamber, by fixed mount setting on support, the vacuum tube is provided with two or more, the electromagnet is identical with vacuum tube quantity, the electromagnet is arranged on support and is bonded with the upper end outer wall of vacuum tube, the electromagnet, power supply and switch are sequentially connected in series, demonstration object is placed in the vacuum chamber of the vacuum tube, one piece of iron plate is fixedly installed on the demonstration object.The beneficial effects of the utility model：Student can take action on one's own to demonstrate feather and motion state of the weight in freely falling body, it was observed that the motion process that feather falls with weight, corrects common-sense understanding mistake simultaneously, there is more deep understanding more directly perceived to movement of falling object rule.
Description
Technical field
Originally it is new to belong to physics teaching experiment equipment technical field, and in particular to a kind of demonstrator for teaching free falling body.
Background technology
Not by any resistance, only the object that lands under gravity, is named " freely falling body ".If do not considered big vapour lock
Power, the movement of falling object in the region are uniformly accelrated rectilinear motions, and its acceleration is constantly equal to gravity acceleration g.It is initial velocity
The uniformly accelrated rectilinear motion for being zero.That is feather and the speed to fall during shot freely falling body be identical, this common-sense with people
There is larger difference in understanding, reason is, in actual life under the drag effect of air, the less object fall of quality is slower.
In common Physical Experiment, the movement of falling object is important experiment, it is intended to verifies the object of freely falling body by testing
The characteristics of motion, change the understanding mistake of common-sense.
Understanding for freely falling body, one of difficult point are that the general knowledge that its conclusion is lived with us is disagreed, such as：
In life, feather is slower than the speed that soldier's pang ball falls.Because under the influence of the intervention factor of air drag, air resistance
Power has a great influence for the small object of the big quality of volume.Because the characteristics of motion of freely falling body needs the condition in perfect vacuum
Under, existing experiment instrument and demonstration teaching aid are unable to reach, and can not correct the general knowledge in our ideas by the demonstration of reality
Property mistake.It can only be explained by way of giving an oral account and explaining in life and the reason for violation freely falling body rule, be learned under air ambient
The raw understanding for freely falling body is not directly perceived enough, deep.
Utility model content
Feather and weight can not be demonstrated for existing experiment teaching aid in freely falling body with the same speed time to fall
A kind of the problem of ground, there is provided demonstrator for teaching free falling body.
A kind of demonstrator for teaching free falling body, it is characterised in that including support, vacuum tube, electromagnet, power supply, switch and demonstration
Object, the vacuum tube are made up of transparent material, and inside has vacuum chamber, by fixed mount setting on support, the vacuum
Pipe is provided with two or more, and the electromagnet is identical with vacuum tube quantity, and the electromagnet is arranged on support and and vacuum tube
The fitting of upper end outer wall, the electromagnet, power supply and switch be sequentially connected in series, and demonstration thing is placed in the vacuum chamber of the vacuum tube
One piece of iron plate is fixedly installed in body, described demonstrate on object.
The vacuum tube is made up of glass material.
The bottom of the vacuum tube vacuum chamber is provided with cushion pad.
The beneficial effects of the utility model：Student can take action on one's own to demonstrate feather and motion of the weight in freely falling body
State, it was observed that the motion process that feather falls with weight, breaks common-sense understanding mistake, to movement of falling object rule simultaneously
There is more deep understanding more directly perceived.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of the utility model one；
Fig. 2 is the left view of the embodiment of the utility model one；
Fig. 3 is the structural representation of the hollow ball of the embodiment of the utility model one；
Fig. 4 is the structural representation of the feather of the embodiment of the utility model one.
Embodiment
With reference to the accompanying drawing in the utility model embodiment, the technical solution of the utility model is described further.
A kind of demonstrator for teaching free falling body, including support 1, vacuum tube 2, electromagnet, power supply 4, switch 5 and demonstration object, institute
Vacuum tube 2 to be stated to be made up of transparent material, inside has vacuum chamber, and the vacuum tube 2 is arranged on support 1 by fixed mount 11,
The vacuum tube 2 is provided with two or more, and the electromagnet is identical with the quantity of vacuum tube 2, and the electromagnet is arranged on support 1
And be bonded with the upper end outer wall of vacuum tube 2, the electromagnet, power supply 4 and switch 5 are sequentially connected in series, the vacuum chamber of the vacuum tube 2
It is middle to place demonstration object, demonstrate and one piece of iron plate is fixedly installed on object.
The embodiment of the utility model one, as shown in figure 1, vacuum tube 2 is provided with two, the first electromagnet 31 and the second electromagnetism
Iron 32 is separately positioned on the upside of vacuum tube 2, and is connected with power supply 4 and switch 5.It is feather 61 to demonstrate one, object, such as Fig. 4 institutes
Show, its end set has the first iron plate 611.Another demonstration object is hollow ball 62, as shown in figure 3, it is made of plastics
Hollow ball, surface pass through the second iron plate of glue sticking 621.When freely falling body is demonstrated, closure switch 5 first, the first electromagnetism
The state that the electromagnet 32 of iron 31 and second is in electric, by the slant setting of support 1, makes bottom plate higher, under gravity
Feather 61 and hollow ball 62 slide into the side for being provided with the first electromagnet 31 and the second electromagnet 32 inside vacuum tube 2, and first
Iron plate 611 is adsorbed by the second electromagnet 32 across the wall of vacuum tube 2, and the second iron plate 621 is by 31 each town vacuum tube 2 of the first electromagnet
Wall adsorbs.Now, support 1 is placed vertically, as shown in Fig. 2 feather 61 and hollow ball 62 are fixed on vacuum by electromagnet
The vacuum chamber top of pipe 2, the preparation of lecture experiment is carried out, disconnected switch 5, the first electromagnet 31 and the second electromagnet 32
Magnetic force is lost, while discharges feather 61 and hollow ball 62, it is observed and the process of the bottom of vacuum tube 2 is fallen under simultaneously.By true
Blank pipe 2 provides the environment of a vacuum for freely falling body so that and the actual dropping process of object meets theoretic derivation, and
And it is simple in construction, cost is relatively low, and the understanding mistake for correcting the common-sense of student is tested by actual presentation, more intuitively deep
Understand the characteristics of motion of freely falling body.By way of electromagnet is connected with power supply 4 and switch 5, by a switch 5 simultaneously
Control two or more electromagnet while discharge demonstration object, its synchronism is very good, ensures to discharge compared to by human hand
Opportunity it is identical more accurate, easily, the synchronization of the opportunity height of demonstration object release, provided the foundation for accurately experiment
Condition.
It is understood that more can be set to be contrast experiment in vacuum tube 2, meanwhile, the selection for demonstrating object
It is also not limited to feather and hollow ball.
The vacuum tube 2 is made up of glass material.
The bottom of the vacuum chamber of vacuum tube 2 is provided with cushion pad 21, prevents from demonstrating when object is fallen by top and smashes very
Blank pipe 2.
It will be appreciated that embodiment of the present utility model while there has been shown and described that, for the common skill of this area
For art personnel, it is possible to understand that these embodiments can be carried out in the case where not departing from principle of the present utility model and spirit
A variety of change, modification, replacement and modification, the scope of the utility model are defined by the appended claims and the equivalents thereof.
Claims (3)
1. a kind of demonstrator for teaching free falling body, it is characterised in that including support (1), vacuum tube (2), electromagnet, power supply (4), switch
(5) it is made up with demonstration object, the vacuum tube (2) of transparent material, inside has vacuum chamber, is arranged on by fixed mount (11)
On support (1), the vacuum tube (2) is provided with two or more, and the electromagnet is identical with vacuum tube (2) quantity, the electromagnetism
Iron is arranged on support (1) and is bonded with the upper end outer wall of vacuum tube (2), and the electromagnet, power supply (4) and switch (5) are successively
Connect, demonstration object is placed in the vacuum chamber of the vacuum tube (2), one piece of iron plate is fixedly installed on the demonstration object.
2. demonstrator for teaching free falling body as claimed in claim 1, it is characterised in that the vacuum tube (2) is made up of glass material.
3. demonstrator for teaching free falling body as claimed in claim 1, it is characterised in that the bottom of vacuum tube (2) vacuum chamber is set
It is equipped with cushion pad (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720281886.0U CN206711460U (en) | 2017-03-22 | 2017-03-22 | A kind of demonstrator for teaching free falling body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720281886.0U CN206711460U (en) | 2017-03-22 | 2017-03-22 | A kind of demonstrator for teaching free falling body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206711460U true CN206711460U (en) | 2017-12-05 |
Family
ID=60470757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720281886.0U Expired - Fee Related CN206711460U (en) | 2017-03-22 | 2017-03-22 | A kind of demonstrator for teaching free falling body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206711460U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108766132A (en) * | 2018-05-14 | 2018-11-06 | 广西千迷科技有限公司 | A kind of multi-functional Physical Education instructional device |
| CN108847096A (en) * | 2018-07-20 | 2018-11-20 | 佛山科枫文化传播有限公司 | A kind of free fall experimental device |
| JP7455097B2 (en) | 2021-10-19 | 2024-03-25 | 十郎 佐原 | Fall experiment aid for teaching materials |
-
2017
- 2017-03-22 CN CN201720281886.0U patent/CN206711460U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108766132A (en) * | 2018-05-14 | 2018-11-06 | 广西千迷科技有限公司 | A kind of multi-functional Physical Education instructional device |
| CN108847096A (en) * | 2018-07-20 | 2018-11-20 | 佛山科枫文化传播有限公司 | A kind of free fall experimental device |
| CN108847096B (en) * | 2018-07-20 | 2020-11-20 | 佛山科枫文化传播有限公司 | Free fall experimental apparatus |
| JP7455097B2 (en) | 2021-10-19 | 2024-03-25 | 十郎 佐原 | Fall experiment aid for teaching materials |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20171205 Termination date: 20180322 |