CN209879913U - Object overweight and weightlessness experiment instrument - Google Patents
Object overweight and weightlessness experiment instrument Download PDFInfo
- Publication number
- CN209879913U CN209879913U CN201821121634.2U CN201821121634U CN209879913U CN 209879913 U CN209879913 U CN 209879913U CN 201821121634 U CN201821121634 U CN 201821121634U CN 209879913 U CN209879913 U CN 209879913U
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- box
- pulley
- overweight
- electronic scale
- weightlessness
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Abstract
An object overweight and weightlessness experiment instrument. Two fixed pulleys are arranged on a cross beam at the upper end of a rectangular support with the height of 2 m, a pulley box is arranged below the cross beam, small holes and a buffer spring are arranged on the pulley box, one end of a thin rope spans over the fixed pulleys, penetrates through the small holes of the pulley box and the buffer spring and is connected with a hook code, and the other end of the thin rope spans over the other fixed pulley, penetrates through the small holes of the pulley box and the buffer spring and is connected with the upper end of a measuring box; the bottom of measuring the box sets up miniature digital display electronic scale, places the standard weight on the electronic scale, and the upper end of measuring the box sets up an intelligent camera that has the WIFI function, and the camera realizes wireless connection with cell-phone or computer, consequently observes the reading on the electronic scale in real time from cell-phone or computer, or plays the video observation reading by the glossy privet. The difficulty that the reading and the data recording cannot be carried out when the object moves rapidly in the experimental process is solved, the overweight and weightlessness process of the object can be demonstrated, the overweight and weightlessness phenomena of the object can be verified, and the structure is simple.
Description
Technical Field
The utility model relates to an overweight weightlessness experimental apparatus of object especially can demonstrate and verify the overweight weightlessness experiment appearance of object.
Background
At present, in the object overweight and weightlessness teaching of high school physics of middle school, students lack actual experience and technical means in teaching, and the students have certain difficulty in learning understanding and applying object overweight and weightlessness knowledge.
Disclosure of Invention
The utility model provides an overweight weightlessness laboratory glassware of object, this laboratory glassware can not only demonstrate the overweight weightlessness process of object, can verify the overweight weightlessness phenomenon of object moreover.
The utility model provides a technical scheme that its technical problem adopted is: a first fixed pulley and a second fixed pulley are arranged on a cross beam at the upper end of a rectangular support with the height of 2 m, a first pulley box and a second pulley box are arranged below the cross beam, a first small hole and a first buffer spring are arranged on the first pulley box, a second small hole and a second buffer spring are arranged on the second pulley box, one end of a thin rope spans over the first fixed pulley and penetrates through the first small hole and the first buffer spring on the first pulley box to be connected with a hook code, and the other end of the thin rope spans over the second fixed pulley and penetrates through the second small hole and the second buffer spring on the second pulley box to be connected with the upper end of a measuring box; the measuring box is made of lightweight acrylic plates. The bottom of the measuring box is provided with a miniature digital display electronic scale, a standard weight is placed on the electronic scale and is used as an overweight and weightlessness observation object, the upper end of the measuring box is provided with a miniature camera with a WIFI function and a storage function, and the camera is in wireless connection with a mobile phone or a computer, so that the reading or playback reading of the electronic scale can be observed in real time from the mobile phone or the computer.
Furthermore, a triangular support is arranged on a base of the support, so that the purpose of stabilizing the support is achieved.
Furthermore, the mass value of the standard weight is preferably 100-200 g.
The beneficial effects of the utility model are that, the difficulty that can not reading and record data when having solved the quick motion of object in the experimentation can demonstrate the overweight weightlessness process of object, can verify the overweight weightlessness phenomenon of object again, simple structure, convenient operation.
Drawings
The apparatus of the present invention will be further described with reference to the accompanying drawings and examples.
FIG. 1 is a schematic illustration of an implementation.
In the figure 1, a chassis, 2, a triangular support, 3, a support, 4, a pull rope, 5, a first pulley, 6, a first pulley box, 7, a first small hole, 8, a first buffer spring, 9, a hook code, 10, a second fixed pulley, 11, a second pulley box, 12, a second small hole, 13, a second buffer spring, 14, a measuring box, 15, an electronic scale, 16, a standard weight and 17, an intelligent micro camera.
Detailed Description
In fig. 1, an object overweight and weightlessness experiment instrument is installed on a vertical rectangular support 3 2 meters high, a fixed first fixed pulley 5 and a second fixed pulley 10 are arranged on a beam at the upper end of the support 3, a first pulley box 6 and a second pulley box 11 are arranged below the beam, a first small hole 7 and a first buffer spring 8 are arranged on the first pulley box 6, a second small hole 12 and a second buffer spring 13 are arranged on the second pulley box 11, one end of a pull rope 4 spans over the first fixed pulley 5, penetrates through the first small hole 7 and the first buffer spring 8 on the first pulley box 6, and is connected with a hook weight 9, and the other end of a thin rope 4 spans over the second fixed pulley 10, penetrates through the second small hole 12 and the second buffer spring 13 on the second pulley box 11, and is connected with the upper end of a measurement box 14; the measuring box 14 is made of lightweight acrylic plate.
The bottom of the measuring box 14 is provided with a micro digital display electronic scale 15, a standard weight 16 is placed on the electronic scale 15, the standard weight 16 is used as an overweight and weightlessness observation object, the upper end of the measuring box is provided with a micro camera 17 with a WIFI function and a storage function, the camera 17 can be in wireless connection with a mobile phone or a computer, and therefore the reading or the replay reading on the electronic scale 15 can be observed in real time from the mobile phone or the computer.
The standard weight is used as an observation object, the pressure of the standard weight on the electronic scale during the static, accelerated rising and accelerated falling is observed, and the overweight and weightlessness phenomena of the object are demonstrated by analyzing and comparing the observed data.
Weighing all the mass of the measuring box 14, weighing the mass of the hook code 9, calculating the acceleration of a mechanical system formed by the measuring box 14, the hook code 9 and the string 4 during acceleration rising and acceleration falling by using Newton's second law, namely the acceleration of the standard weight 16, calculating the pressure of the standard weight 16 on the electronic scale during acceleration rising and acceleration falling, and comparing the pressure with the pressure of the standard weight on the electronic scale during static, acceleration rising and acceleration falling so as to realize the weightlessness phenomenon of the verification object.
Demonstration of weight loss: weighing the whole mass of the measuring box 14, and setting the number of the hook codes 9 to enable the measuring box 14 to descend in an accelerated manner; after a power switch of the micro camera 17 and a power switch of the electronic scale 15 are turned on and connected with a mobile phone or a computer, the string is pulled down by hand to enable the measuring box 14 to rise to the highest point and keep a static state, the reading on the electronic scale 15 is recorded from the mobile phone or the computer, namely the actual weight of the standard weight 16, then the hand is loosened, the measuring box 14 is accelerated to descend, the reading on the electronic scale 15 is observed from the mobile phone or the computer in the process, or the reading on the mobile phone or the computer is replayed, and the reading is smaller than the actual weight, so that the weight loss phenomenon is demonstrated.
Demonstration of overweight: weighing the whole mass of the measuring box 14, and setting the number of the hook codes 9 to enable the measuring box 14 to ascend in an accelerated manner; after a power switch of the micro camera 17 and a power switch of the electronic scale 15 are turned on and connected with a mobile phone or a computer, the string is pushed up by hand to enable the measuring box 14 to descend to the lowest point and keep a static state, the reading on the electronic scale 15 is recorded from the mobile phone or the computer, namely the actual weight of the standard weight 16, then the hand is loosened, the measuring box 14 is accelerated and ascended, the reading on the electronic scale 15 is observed from the mobile phone or the computer in the process, or the reading on the mobile phone or the computer is replayed, and the reading is larger than the actual weight, so that the overweight phenomenon is demonstrated.
Weight loss verification: weighing the whole mass of the measuring box 14, and setting the number of the hook codes 9 to enable the measuring box 14 to descend in an accelerated manner; turning on a power switch of the micro camera 17 and a power switch of the electronic scale 15, pulling down the string by hand after connecting the micro camera 17 and the power switch of the electronic scale 15, so that the measuring box 14 rises to the highest point and keeps a static state, recording the reading on the electronic scale 15 from the mobile phone or the computer, namely the real weight of the standard weight 16, then loosening the hand, accelerating the descending of the measuring box 14, and observing the reading on the electronic scale 15 from the mobile phone or the computer or replaying the reading on the mobile phone or the computer in the process. The total mass of the hook code 9 is set according to the total mass of the measuring box 14, the pulley friction force and the air resistance are ignored, the acceleration of the system is calculated, namely the acceleration of the standard weight 16, the pressure of the standard weight 16 on the electronic scale is calculated, the difference between the acceleration and the pressure is compared with the reading of the electronic scale in the experiment, the difference between the acceleration and the pressure is small, and the difference between the acceleration and the reading is smaller than the real weight of the standard weight 16, so that the weight loss phenomenon is verified.
Verification of overweight: setting the number of the hook codes 9 according to the total mass of the measuring box 14, so that the measuring box 14 can be accelerated to rise; after the power switch of the micro camera 17 and the power switch of the electronic scale 15 are turned on and connected with a mobile phone or a computer, the string is pushed up by hand to enable the measuring box 14 to descend to the lowest point and keep a static state, the reading on the electronic scale 15 is recorded from the mobile phone or the computer, namely the actual weight of the standard weight 16, then the hand is loosened, the measuring box 14 is accelerated and ascended, and the reading on the electronic scale 15 is observed from the mobile phone or the computer or the reading on the mobile phone or the computer is replayed in the process. According to the total mass of the measuring box 14, the total mass of the hook code 9 is set, the friction force and the air resistance of the pulley are ignored, the acceleration of the system, namely the acceleration of the standard weight 16, the pressure of the standard weight 16 on the electronic scale is calculated, the acceleration is compared with the reading of the electronic scale in the experiment, the difference between the acceleration and the pressure is small, and the two are both larger than the actual weight of the standard weight 16, so that the overweight phenomenon is verified.
Claims (2)
1. The utility model provides an object overweight weightlessness experiment appearance, installs on upright 2 meters high rectangle support (3), characterized by: a fixed first fixed pulley (5) and a second fixed pulley (10) are arranged on a beam at the upper end of the bracket (3), a first pulley box (6) and a second pulley box (11) are arranged below the beam, a first small hole (7) and a first buffer spring (8) are arranged on the first pulley box (6), a second small hole (12) and a second buffer spring (13) are arranged on the second pulley box (11), one end of a pull rope (4) strides over the first fixed pulley (5), and passes through a first small hole (7) and a first buffer spring (8) on the first pulley box (6), is connected with the hook code (9), the other end of the thin rope (4) crosses over a second fixed pulley (10), and passes through a second small hole (12) and a second buffer spring (13) on a second pulley box (11), is connected with the upper end of the measuring box (14), and the measuring box (14) is made of a light acrylic plate.
2. An overweight and weightlessness test instrument for objects according to claim 1, wherein: the bottom of measuring box (14) sets up miniature digital display electronic scale (15), places standard weight (16) on electronic scale (15), for overweight weightlessness observation object with standard weight (16), the upper end of measuring box sets up one and has the WIFI function and take miniature camera (17) of memory function, camera (17) can realize wireless connection with cell-phone or computer, can follow reading or playback reading on electronic scale (15) on cell-phone or the computer in real time from this.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821121634.2U CN209879913U (en) | 2018-07-16 | 2018-07-16 | Object overweight and weightlessness experiment instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821121634.2U CN209879913U (en) | 2018-07-16 | 2018-07-16 | Object overweight and weightlessness experiment instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209879913U true CN209879913U (en) | 2019-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821121634.2U Expired - Fee Related CN209879913U (en) | 2018-07-16 | 2018-07-16 | Object overweight and weightlessness experiment instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209879913U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110767045A (en) * | 2018-07-26 | 2020-02-07 | 怀化学院 | Object overweight and weightlessness experiment instrument |
-
2018
- 2018-07-16 CN CN201821121634.2U patent/CN209879913U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110767045A (en) * | 2018-07-26 | 2020-02-07 | 怀化学院 | Object overweight and weightlessness experiment instrument |
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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: 20191231 Termination date: 20200716 |
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| CF01 | Termination of patent right due to non-payment of annual fee |