CN203165296U - Free-fall motion experiment device - Google Patents

Free-fall motion experiment device Download PDF

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Publication number
CN203165296U
CN203165296U CN 201320138290 CN201320138290U CN203165296U CN 203165296 U CN203165296 U CN 203165296U CN 201320138290 CN201320138290 CN 201320138290 CN 201320138290 U CN201320138290 U CN 201320138290U CN 203165296 U CN203165296 U CN 203165296U
Authority
CN
China
Prior art keywords
fall
permanent magnet
ball
falling
movement
Prior art date
Application number
CN 201320138290
Other languages
Chinese (zh)
Inventor
应雄纯
Original Assignee
湖州师范学院
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 湖州师范学院 filed Critical 湖州师范学院
Priority to CN 201320138290 priority Critical patent/CN203165296U/en
Application granted granted Critical
Publication of CN203165296U publication Critical patent/CN203165296U/en

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Abstract

The utility model discloses a free-fall motion experiment device. The free-fall motion experiment device comprises a fixing device, a glass pipe (8), a sealing device, metal balls (5), a permanent magnet (6) and an air exhaust pipe (10), wherein the glass pipe (8) is sealed by the sealing device, the fixing device is fixed on a vertical volume (2) and remains a vertical state, the permanent magnet (6) is arranged at a top portion of an upper rubber plug (7) and is used for attracting the metal balls (5), and the metal balls (5) are solid and hollow balls which are respectively arranged at two projected sides in the upper rubber plug (7) and are sucked by the permanent magnet (6). Air exhaust of the glass pipe is carried out to realize a vacuum space, the permanent magnet (6) is moved away upwards suddenly, the metal balls (5) fall and do free fall motion, so the red hollow ball and the white solid ball simultaneously fall, the two metal balls fall on a lower rubber plug (9) and have a same sound, so the hollow ball and the solid ball fall on a same surface simultaneously.

Description

A kind of movement of falling object experimental provision
Technical field
The utility model relates to a kind of physics facility, relates in particular to a kind of movement of falling object experimental provision.
Background technology
Only under the gravity effect, the motion that object is vertically fallen by static beginning is called the movement of falling object.Because be subjected to the influence of air resistance, the falling bodies of occurring in nature are not proper freely falling bodies.Only in vitro just can be observed the real movement of falling object what highly vacuumize, all objects, as iron ball and chicken feather with same acceleration movement.
All objects, as long as fall from sustained height, they all should land simultaneously.
In physics teaching in secondary school, with newton's pipe demonstration movement of falling object test experiment, the problem of existence is to reverse rapidly in the process of newton's pipe, and small bulk body has begun pasting tube wall and glided, thereby can not illustrate it is to fall from static the beginning well, be difficult to determine to be the movement of falling object.
A kind of movement of falling object experimental provision of the present utility model can be demonstrated the movement of falling object, and experimental technique is easy, directly perceived, precision is high.
The utility model content
The purpose of this utility model provides directly perceived, the effective a kind of movement of falling object experimental provision of a kind of method.
The purpose of this utility model is achieved through the following technical solutions:
A kind of movement of falling object experimental provision of the present utility model, comprise: stationary installation, glass tube 8, packoff, Metal Ball 5, permanent magnet 6, exhaust tube 10 etc., after glass tube 8 is sealed by packoff, be fixed on the column 2 by stationary installation, and maintenance vertical state, permanent magnet 6 places the top of top cement plug 7, in order to have attracted Metal Ball 5.
Described stationary installation comprises base 1, column 2, following geometrical clamp 3, goes up geometrical clamp 4, is used for fixing glass pipe 8, and keeps plumbness.
The length of described glass tube 10 is 1.5 meters, 8 centimetres of internal diameters, 0.4 centimetre of wall thickness.
Described packoff comprises top cement plug 7, bottom plug 9 in order to sealed glass tube 8, has a projection in the top cement plug 7, in order to Metal Ball 5 to be measured is separated.
About 10 millimeters two of described Metal Ball 5 diameters, one is hollow ball, about 0.2 millimeter of shell thickness, coating Red; Another grain is medicine ball, coating white.
This experimental provision does not adopt electromagnet to attract Metal Ball, and electromagnet still has the remanent magnetism effect after outage, because in fact the existence of remanent magnetism is difficult to guarantee to accomplish that two Metal Ball fall synchronously.
Projection in the top cement plug 7 in order to two Metal Ball 5 to be measured are separated, prevents the medicine ball of red hollow ball and white because of the remanent magnetism effect, and the moments of upwards removing suddenly at permanent magnet 6 attract each other.
The technical scheme that is provided by above-mentioned the utility model as can be seen, a kind of movement of falling object experimental provision described in the utility model can be demonstrated the movement of falling object, experimental technique is easy, directly perceived, precision is high.
Description of drawings
Fig. 1 is a kind of movement of falling object experimental provision of the utility model synoptic diagram.
Among the figure: 1, base, 2, column, 3, geometrical clamp down, 4, geometrical clamp down, 5, Metal Ball, 6, permanent magnet, 7, top cement plug, 8, glass tube, 9, bottom plug, 10, exhaust tube.
Embodiment
A kind of movement of falling object experimental provision of the present utility model, its preferable embodiment as shown in Figure 1.
1, the demonstration movement of falling object
At first with glass tube 8 good seals, rock Metal Ball 5, make medicine ball and hollow ball place the both sides of top cement plug 7 inner processes respectively, hold with permanent magnet 6, make it fixing, then with air pump by vacuumizing in 10 pairs of glass infusers of exhaust tube, be less than about 133Pa and get final product.
Regulate stationary installation then, make column 2 reach vertical after, the sealed glass tube is fixed on the column 2.
The demonstration operation only needs permanent magnet 6 is upwards removed suddenly, Metal Ball 5 falls to doing the movement of falling object, the medicine ball that can see red hollow ball and white falls simultaneously, can hear that the strike note that Metal Ball drops on the bottom plug 9 is same sound, illustrate heavy ball and light ball be fall simultaneously " ".
This experimental provision does not adopt electromagnet to attract Metal Ball, and electromagnet still has the remanent magnetism effect after outage, because in fact the existence of remanent magnetism is difficult to guarantee to accomplish that two Metal Ball fall synchronously.
Projection in the top cement plug 7 in order to Metal Ball 5 to be measured is separated, prevents the medicine ball of red hollow ball and white because of the remanent magnetism effect, and the moments of upwards removing suddenly at permanent magnet 6 attract each other.
In order to prove the drag effect of air under antivacuum situation, can be before the formal demonstration movement of falling object, earlier at antivacuum this experimentation of demonstration down, can see obviously that white medicine ball falls with red hollow ball earlier, the strike note that strikes on the bottom plug 9 is asynchronous two sound, explanation is under the drag effect of air, and Metal Ball 5 is not to do the movement of falling object.
The utlity model has following characteristics:
Experiment is simple, and general student instructs a little all and can finish the measurement task at short notice;
Experimentation is clear, success of the test rate height.
The above; it only is the preferable embodiment of the utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement all should be encompassed within the protection domain of the present utility model.

Claims (3)

1. a movement of falling object experimental provision is characterized in that: comprise stationary installation, glass tube (8), packoff, Metal Ball (5), permanent magnet (6), exhaust tube (10);
Glass tube (8) is fixed on the column (2) by stationary installation after being sealed by packoff, and keeps vertical state;
Permanent magnet (6) places the top of top cement plug (7), in order to have attracted Metal Ball (5).
2. a kind of movement of falling object experimental provision according to claim 1 is characterized in that, described Metal Ball (5) is that a pair of diameter is 10 millimeters hollow ball.
3. a kind of movement of falling object experimental provision according to claim 1 is characterized in that, described packoff comprises top cement plug (7), bottom plug (9), has a projection in the top cement plug (7), in order to pair of metal ball (5) to be measured is separated.
CN 201320138290 2013-03-11 2013-03-11 Free-fall motion experiment device CN203165296U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201320138290 CN203165296U (en) 2013-03-11 2013-03-11 Free-fall motion experiment device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201320138290 CN203165296U (en) 2013-03-11 2013-03-11 Free-fall motion experiment device

Publications (1)

Publication Number Publication Date
CN203165296U true CN203165296U (en) 2013-08-28

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201320138290 CN203165296U (en) 2013-03-11 2013-03-11 Free-fall motion experiment device

Country Status (1)

Country Link
CN (1) CN203165296U (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104966438A (en) * 2015-07-31 2015-10-07 湖南城市学院 Experimental instrument measuring gravitational acceleration through falling body method
CN105261263A (en) * 2015-11-22 2016-01-20 湖南城市学院 Freefall motion experimental instrument
CN106157757A (en) * 2016-08-26 2016-11-23 侯明 A kind of Novel physical laboratory table
CN106847002A (en) * 2017-04-26 2017-06-13 内蒙古民族大学 A kind of freely falling body Physical Experiment instrument and Physics Experiment Teaching System
CN108538157A (en) * 2018-04-23 2018-09-14 韩昱威 A kind of physics experiment with falling objects improvement device
CN110782750A (en) * 2019-11-22 2020-02-11 周宇航 Physical free fall experiment simulation device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104966438A (en) * 2015-07-31 2015-10-07 湖南城市学院 Experimental instrument measuring gravitational acceleration through falling body method
CN105261263A (en) * 2015-11-22 2016-01-20 湖南城市学院 Freefall motion experimental instrument
CN106157757A (en) * 2016-08-26 2016-11-23 侯明 A kind of Novel physical laboratory table
CN106847002A (en) * 2017-04-26 2017-06-13 内蒙古民族大学 A kind of freely falling body Physical Experiment instrument and Physics Experiment Teaching System
CN108538157A (en) * 2018-04-23 2018-09-14 韩昱威 A kind of physics experiment with falling objects improvement device
CN110782750A (en) * 2019-11-22 2020-02-11 周宇航 Physical free fall experiment simulation device

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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

Granted publication date: 20130828

Termination date: 20140311