CN106297505B - The two ball motion conditions that successively fall analyze demonstrating experiment device - Google Patents
The two ball motion conditions that successively fall analyze demonstrating experiment device Download PDFInfo
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- CN106297505B CN106297505B CN201510280004.4A CN201510280004A CN106297505B CN 106297505 B CN106297505 B CN 106297505B CN 201510280004 A CN201510280004 A CN 201510280004A CN 106297505 B CN106297505 B CN 106297505B
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- bead
- electromagnet
- telegraph key
- bar
- power supply
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Abstract
The present invention announces a kind of two ball motion conditions analysis demonstrating experiment device that successively falls, and includes at least bottom plate (1), hook (2), vertical bar first (3), vertical bar second (4), power supply first (5), power supply second (6), telegraph key first (7), telegraph key second (8), electromagnetic iron armour (9), electromagnet second (10), " V " type metal contact (11), metal ring (12), light-weight metal bar (13), bead first (14), bead second (15).It is closed telegraph key first and telegraph key second, is adsorbed on bead first and bead second respectively at electromagnetic iron armour and electromagnet second.Telegraph key second is disconnected, bead second, bead first successively fall, and during the falling process, student can observe that the spacing between them is constantly becoming larger well.
Description
Technical field
The present invention relates to a kind of teaching equipments, the experimental demonstration specifically suitable for movement of falling object teaching.
Background technique
In senior middle school physics teaching, about the analysis of the successive two ball motion conditions that fall, there is no preferably drilled in laboratory
Show experimental provision.In teaching, teacher can only theoretically be explained, the spacing being between two beads that same position successively falls
Constantly become larger；Or two hands respectively take a bead, then successively discharge two beads, two bead of observation of students is allowed to fall
During they spacing variation.But such experiment has following deficiency: first is that, the movement of finger, can inhale when discharging bead
The attention for drawing student has dispersed the observation that student moves bead；Second is that teacher's both hands are successive when repeatedly doing this experiment
The time interval of release bead is different, so the spacing of it and first bead is also not solid when release the latter bead
Fixed.Therefore, such experiment, student cannot observe that their spacing changes in the two ball motion processes that successively fall well
Situation.
Summary of the invention
It is an object of the invention to overcome the deficiencies of existing technologies, a kind of can demonstrate well is provided and is in same position elder generation
The spacing variation issue between two beads to fall afterwards.
To achieve the above object, two ball motion conditions of successive whereabouts proposed by the present invention analyze demonstrating experiment device, knot
Structure include: bottom plate, hook, vertical bar first, vertical bar second, power supply first, power supply second, telegraph key first, telegraph key second, electromagnetic iron armour, electromagnet second,
" V " type metal contact piece, metal ring, light-weight metal bar, bead first, bead second, the hook are mounted on a side of bottom plate
Face；Power supply first, the power supply second, telegraph key first, telegraph key second are mounted on the upper surface of bottom plate；The electromagnetic iron armour is mounted on bottom plate
Below position to the left；The electromagnet second is mounted on position to the right below bottom plate；One end of the vertical bar first
It is fixed below bottom plate and is located at the left side of electromagnet second, the other end of vertical bar first fixes " V " type metal contact piece；Institute
The one end for the vertical bar second stated is fixed on the right side for below bottom plate and being located at electromagnet second, and the other end of vertical bar second fixes one
Metal ring；The light-weight metal bar passes through metal ring and is placed on metal ring, and makes light-weight metal bar in metal
The left part of annulus is slightly less than light-weight metal bar in the right part of metal ring, under gravity light-weight metal bar
Left end is touched at " V " type metal contact piece；The bead first is adsorbed at the electromagnetic iron armour of energization；The bead second absorption
At the electromagnet second of energization.Electromagnetic iron armour and power supply first, telegraph key first, metal ring, light-weight metal bar, " V " type metal contact piece
Coupled in series.Electromagnet second and power supply second, telegraph key second coupled in series.Bead first, the bead second is the electromagnetism that can be energized
The steel ball that iron attracts.
The present invention compared to existing technologies, has the advantage that when touching out light-weight metal bar in bead second whereabouts, small
Ball first starts to fall, this moment, the spacing of bead second and bead first be it is fixed, i.e., from bead second to light-weight metal bar
Away from being fixed, and in the next motion process of two beads, it must can clearly find out that their spacing is constantly becoming larger.
Even if multi-pass operation, when each bead first just starts to fall, the spacing of bead second and bead first is the same, and next
Motion process is also same so that it is convenient to which student repeatedly observes.In addition, setting laboratory apparatus, after powering on, only need to disconnect
Telegraph key second, two balls can successively fall, and such operational motion will not influence the observation that student moves two beads.
Detailed description of the invention
Attached drawing is the structural schematic diagram of the embodiment of the present invention.
1: bottom plate；2: hook；3: vertical bar first；4: vertical bar second；5: power supply first；6: power supply second；7: telegraph key first；8: telegraph key second；
9: electromagnetic iron armour；10: electromagnet second；11: " V " type metal contact piece；12: metal ring；13: light-weight metal bar；14: bead first；
15: bead second.
Specific embodiment
The present invention successively falls two ball motion conditions analysis demonstrating experiment device, and structure includes: bottom plate 1, hook 2, perpendicular
Bar first 3, vertical bar second 4, power supply first 5, power supply second 6, telegraph key first 7, telegraph key second 8, electromagnetic iron armour 9, electromagnet second 10, " V " type metal
Contact 11, metal ring 12, light-weight metal bar 13, bead first 14, bead second 15, the hook 2 are mounted on one of bottom plate 1
Side；The power supply first 5, power supply second 6, telegraph key first 7, telegraph key second 8 are mounted on the upper surface of bottom plate；The electromagnetic iron armour 9 is pacified
The position to the left below bottom plate 1；The electromagnet second 8 is mounted on position to the right below bottom plate 1；Described is perpendicular
One end of bar first 3 is fixed on the left side for below bottom plate 1 and being located at electromagnet second 8, and the other end of vertical bar first 3 fixes one
" V " type metal contact piece 11；One end of the vertical bar second 4 is fixed on the right side for below bottom plate 1 and being located at electromagnet second 10,
The other end of vertical bar second 4 fixes a metal ring 12；The light-weight metal bar 13 passes through metal ring 12 and is placed in gold
Belong on annulus 12, and light-weight metal bar 13 is made to be slightly less than light-weight metal bar 13 in metal ring in the left part of metal ring 12
12 right part, the left end of light-weight metal bar 13 is touched at " V " type metal contact piece 11 under gravity；Described is small
Ball first 14 is adsorbed at the electromagnetic iron armour 9 of energization；The bead second 15 is adsorbed at the electromagnet second 10 of energization.Electromagnetic iron armour
9 with power supply first 5, telegraph key first 7, metal ring 12, light-weight metal bar 13,11 coupled in series of " V " type metal contact piece.Electromagnet second 10
With power supply second 6,8 coupled in series of telegraph key second.The bead first 14, bead second 15 are the steel that the electromagnet that can be energized attracts
Ball.
Application method of the invention:
Experimental provision is passed through the upper edge on the upper edge or classroom front door that hang over classroom blackboard.Light-weight metal bar is allowed to pass through
Metal ring is simultaneously placed on metal ring, and light-weight metal bar is made to be slightly less than light-weight metal bar in the left part of metal ring
In the right part of metal ring, the left end of light-weight metal bar is touched at " V " type metal contact piece under gravity.Closure
Telegraph key first, electromagnetic iron armour are formed with power supply first, telegraph key first, metal ring, light-weight metal bar, " V " type metal contact piece coupled in series
One closed circuit.It is closed telegraph key second, electromagnet second and power supply second, telegraph key second coupled in series also form a closed circuit.It is disconnected
Telegraph key second is opened, electromagnet second loses magnetic force, and the free-falling since static of bead second was fallen in planting, and light-weight metal is opened in collision
Bar simultaneously continues to fall, and at this moment, since light-weight metal bar is touched out by bead second, has cut off electromagnetic iron armour and power supply first, telegraph key first, gold
Belong to annulus, light-weight metal bar, " V " type metal contact piece coupled in series and form a closed circuit, electromagnetic iron armour loses magnetic force, small
The free-falling since static of ball first.When bead first just starts to fall, spacing, that is, bead second between bead first and bead second is also
End fall before it between light-weight metal bar at a distance from, during bead first and bead second continue whereabouts, student can be very
Observe that the spacing between them is constantly becoming larger well.
By above-mentioned experimental demonstration, student can most clearly be observed in the two ball motion processes that successively fall between them
Away from situation of change, this respect knowledge also will be better understood.
Claims (1)
1. successively fall two ball motion conditions analyze demonstrating experiment device, include at least bottom plate (1), hook (2), vertical bar first (3),
Vertical bar second (4), power supply first (5), power supply second (6), telegraph key first (7), telegraph key second (8), electromagnetic iron armour (9), electromagnet second (10),
" V " type metal contact piece (11), metal ring (12), light-weight metal bar (13), bead first (14), bead second (15), feature exists
In: the hook (2) is mounted on a side of bottom plate (1)；The power supply first (5), power supply second (6), telegraph key first (7),
Telegraph key second (8) is mounted on the upper surface of bottom plate；The electromagnetic iron armour (9) is mounted on position to the left below bottom plate (1)；It is described
Electromagnet second (8) be mounted on position to the right below bottom plate (1)；One end of the vertical bar first (3) is fixed on bottom plate (1)
Below and be located at the left side of electromagnet second (10), the other end of vertical bar first (3) fixes " V " type metal contact piece (11)；
One end of the vertical bar second (4) is fixed on the right side for below bottom plate (1) and being located at electromagnet second (10), vertical bar second (4)
The other end fix a metal ring (12)；The light-weight metal bar (13) passes through metal ring (12) and is placed in metal
On annulus (12), and light-weight metal bar (13) is made to be slightly less than light-weight metal bar (13) in gold in the left part of metal ring (12)
Belong to the right part of annulus (12), the left end of light-weight metal bar (13) is touched in " V " type metal contact piece under gravity
(11) at；The bead first (14) is adsorbed at the electromagnetic iron armour (9) of energization；The bead second (15) is adsorbed on energization
At electromagnet second (10)；Electromagnetic iron armour (9) and power supply first (5), telegraph key first (7), metal ring (12), light-weight metal bar (13),
" V " type metal contact piece (11) coupled in series；Electromagnet second (10) and power supply second (6), telegraph key second (8) coupled in series；Described is small
Ball first (14), bead second (15) are the steel ball that the electromagnet that can be energized attracts.
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| CN201510280004.4A CN106297505B (en) | 2015-05-27 | 2015-05-27 | The two ball motion conditions that successively fall analyze demonstrating experiment device |
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| CN201510280004.4A CN106297505B (en) | 2015-05-27 | 2015-05-27 | The two ball motion conditions that successively fall analyze demonstrating experiment device |
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| CN106297505B true CN106297505B (en) | 2018-12-11 |
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| JPH04143691A (en) * | 1990-10-04 | 1992-05-18 | Shunro Sakata | Experimental device of gravity |
| CN2183597Y (en) * | 1993-11-28 | 1994-11-23 | 张凤纪 | Multi-function free-falling body testing instrument |
| CN2768118Y (en) * | 2005-02-24 | 2006-03-29 | 姜波 | Free falling body demonstrating machine |
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| CN203397561U (en) * | 2013-09-09 | 2014-01-15 | 深圳科学高中 | Horizontal projectile experiment demonstrating device |
| CN203870860U (en) * | 2014-05-21 | 2014-10-08 | 袁玉冰 | Demonstration device of Galileo experiment of two iron balls touching the ground simultaneously |
| CN204315142U (en) * | 2014-09-19 | 2015-05-06 | 吉首大学 | One dimension, two dimension collision momentum conservation validation instrument |
| CN204614325U (en) * | 2015-05-27 | 2015-09-02 | 张阁 | The two ball motion conditions that successively fall analyze demonstrating experiment device |
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2015
- 2015-05-27 CN CN201510280004.4A patent/CN106297505B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4761658A (en) * | 1987-01-28 | 1988-08-02 | Georgis Nicholas J | Method and apparatus for measuring experimental quantities using an ink jet impactless timing device |
| CN2049807U (en) * | 1989-06-27 | 1989-12-20 | 甘小春 | Demonstrator for teaching free falling body |
| JPH04143691A (en) * | 1990-10-04 | 1992-05-18 | Shunro Sakata | Experimental device of gravity |
| CN2183597Y (en) * | 1993-11-28 | 1994-11-23 | 张凤纪 | Multi-function free-falling body testing instrument |
| CN2768118Y (en) * | 2005-02-24 | 2006-03-29 | 姜波 | Free falling body demonstrating machine |
| CN102737538A (en) * | 2011-04-12 | 2012-10-17 | 上海辰昊信息科技有限公司 | Horizontal projectile motion experimental instrument |
| CN203300097U (en) * | 2013-04-07 | 2013-11-20 | 安徽理工大学 | Experiment apparatus for verification of Galileo's theorem and determination of gravitational acceleration |
| CN203397561U (en) * | 2013-09-09 | 2014-01-15 | 深圳科学高中 | Horizontal projectile experiment demonstrating device |
| CN203870860U (en) * | 2014-05-21 | 2014-10-08 | 袁玉冰 | Demonstration device of Galileo experiment of two iron balls touching the ground simultaneously |
| CN204315142U (en) * | 2014-09-19 | 2015-05-06 | 吉首大学 | One dimension, two dimension collision momentum conservation validation instrument |
| CN204614325U (en) * | 2015-05-27 | 2015-09-02 | 张阁 | The two ball motion conditions that successively fall analyze demonstrating experiment device |
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| CN106297505A (en) | 2017-01-04 |
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