CN210574544U

CN210574544U - Centripetal force quantification experimental device

Info

Publication number: CN210574544U
Application number: CN201920594564.0U
Authority: CN
Inventors: 郝永常
Original assignee: Wuxi South Ocean College
Current assignee: Wuxi South Ocean College
Priority date: 2019-04-28
Filing date: 2019-04-28
Publication date: 2020-05-19
Anticipated expiration: 2029-04-28

Abstract

The utility model relates to an experimental apparatus technical field just discloses centripetal force quantization experiment device, the on-line screen storage device comprises a base, the top of base fixed mounting has buncher and support respectively, buncher is located in the support, buncher's output fixed mounting has the pivot, the top fixed mounting of pivot has square frame one, square frame one's top fixed mounting has the rotation, fixed mounting has the ruler on rotating, the bottom of rotating uses the central line to install the fixed pulley as central symmetry, and two the fixed pulley all is located in the square frame one. The centripetal force quantitative experimental device has the advantages that the relationship between the centripetal force F and the object mass m, the relationship between the centripetal force F and the object mass r and between the centripetal force F and the object mass m, between the centripetal force F and the object mass m.

Description

Centripetal force quantification experimental device

Technical Field

The utility model relates to an experimental apparatus technical field specifically is centripetal force quantification experiment device.

Background

In physics teaching, centripetal force is a very important teaching content. (circular motion centripetal force formula), it reveals the relation between the centripetal force F and the object mass m, motion radius r, rotation angular velocity omega that the object making circular motion receives, the formula is simple and clear, the relation among every physical quantity is also clear and visible. However, only theoretical derivation and qualitative research of the centripetal force formula are introduced in the teaching materials, and only through a simple and rough demonstration experiment device, the direct proportional relationship between the centripetal force F and the object mass m, the motion radius r and the rotation angular velocity ω when the object performs circular motion is qualitatively described, but no relatively ideal experiment device is provided, and the direct proportional relationship between the centripetal force F and the object mass m, the motion radius r and the rotation angular velocity ω is quantitatively verified. Therefore, in the course of giving lessons, the cognition of the students on the centripetal force is influenced, and the understanding of the students is influenced.

SUMMERY OF THE UTILITY MODEL

The present invention provides a centripetal force quantification experimental device, which has the advantages of enhancing the cognition of the student on the centripetal force, solving the theoretical derivation and qualitative research only introducing the centripetal force formula on the teaching materials, only through the simple and rough demonstration experimental device, qualitatively explaining the object when making the circular motion, the received centripetal force F and the object mass m, the motion radius r, the direct proportional relation between the rotation angular velocity omega, and no ideal experimental device, quantitatively verifying the existence of the direct proportional relation between the centripetal force F and the object mass m, the motion radius r, the rotation angular velocity omega. Therefore, in the course of giving lessons, the cognition of the students on the centripetal force is influenced, and the understanding of the students is influenced.

The utility model provides a following technical scheme: centripetal force quantization experiment device, the on-line screen storage device comprises a base, the top of base fixed mounting respectively has buncher and support, buncher is located in the support, buncher's output fixed mounting has the pivot, the top fixed mounting of pivot has square frame one, square frame one's top fixed mounting has the rotation, fixed mounting has the ruler on rotating, the bottom of rotating uses the central line to install the fixed pulley as central symmetry, and two the fixed pulley all is located in the square frame one, equal fixedly connected with bracing piece, two between the both sides of the bottom of rotating and the both sides of square frame one all hang the object on the bracing piece, the top fixed mounting of rotating has square frame two, top fixed connection tension sensor in the square frame two.

Preferably, the bottom of the tension sensor, the fixed pulley and the side edge of the object are connected through a rope, and the rope penetrates through the top of the rotating body and the side edge of the first square frame.

Preferably, the support rod is a rigid support rod and is thin.

Preferably, the inside fixed mounting of support has the bearing, the quantity of bearing is two, and two the bearing interlude sets up in the pivot.

Preferably, the tension sensor is composed of a power supply, a tension sensor part, an amplifying circuit, an A/D conversion circuit, a single chip circuit and a display circuit.

The utility model discloses possess following beneficial effect:

the centripetal force quantification experimental device drives an object to rotate through the rotating body, so that the rotating angular speed of the rotating body can drive the object to generate the angular speed, the object rotates to pull the inelastic rope and further pull the tension sensor, and the tension sensor directly displays the tension force.

Drawings

Fig. 1 is a schematic overall structure diagram of the present invention;

fig. 2 is a diagram of the experimental steps of the present invention.

In the figure: 1. a base; 2. a speed-regulating motor; 3. a support; 4. a rotating shaft; 5. a first square frame; 6. a swivel; 7. a straightedge; 8. a fixed pulley; 9. a support bar; 10. an object; 11. a second square frame; 12. a tension sensor; 13. and a bearing.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, the centripetal force quantification experimental device comprises a base 1, wherein a speed regulating motor 2 and a support 3 are fixedly mounted at the top of the base 1 respectively, the support 3 is in a shape like a Chinese character ri, the speed regulating motor 2 is positioned in the support 3, bearings 13 are fixedly mounted inside the support 3, the number of the bearings 13 is two, the two bearings 13 are arranged on a rotating shaft 4 in an inserting manner, the bearings 13 can support the rotating shaft 4 without influencing the rotation of the rotating shaft 4, the stability of the device is improved, the output end of the speed regulating motor 2 is fixedly mounted with the rotating shaft 4, a square frame I5 is fixedly mounted at the top of the rotating shaft 4, a rotating body 6 is fixedly mounted at the top of the square frame I5, the rotating body 6 is in a shape like a Chinese character 'T', a straight scale 7 is fixedly mounted on the rotating body 6, the straight scale 7 is horizontal, fixed pulleys 8 are symmetrically mounted at the bottom of the rotating body 6 by, supporting rods 9 are fixedly connected between two sides of the bottom of the rotating body 6 and two sides of the square frame I5, the supporting rods 9 are rigid supporting rods and are thin, friction force between hooks of an object 10 and the supporting rods 9 can be reduced through the thin rigid supporting rods, downward bending brought to the supporting rods 9 due to the gravity of the object can be reduced through the rigid supporting rods, the object 10 is hung on the two supporting rods 9, the object 10 is hung on the supporting rods 9 through the hooks, a square frame II 11 is fixedly installed at the top of the rotating body 6, a tension sensor 12 is fixedly connected to the top of the square frame II 11, the bottom of the tension sensor 12, a fixed pulley 8 and the side of the object 10 are connected through ropes, inelastic ropes reduce the influence of elastic force generated by the ropes on the tension of the tension sensor 12, the ropes penetrate through the top of the rotating body 6 and the side of the square frame I5, and the ropes pass through the fixed pulley, the force sensor 12 is composed of a power supply, a force sensor part, an amplifying circuit, an A/D conversion circuit, a single chip microcomputer circuit and a display circuit, wherein the power supply supplies power to the force sensor 12, when the force sensor 12 works, when the force sensor 12 is under tension, the sensing part is deformed, so that the impedance is changed, the excitation voltage is changed to generate a changed analog signal, the signal inputs a digital signal to a CPU operation controller through the A/D conversion circuit, and finally the CPU directly displays the measured value of the centripetal force on a display screen through the display circuit.

The theory of operation opens buncher 2, and when buncher 2 normally operated, 6 angular velocities of turning reached certain stable value, for object 10 provides certain angular velocity, wherein force sensor 12 fixes and follows on turning and turn 6 rotatory together, and force sensor 12 lower extreme passes through inelastic rope and connects the object to measure the centripetal force of object, force sensor 12 adopts automatic counting display device: when the angular speed of the rotor 6 reaches a stable value, the tension sensor 12 automatically counts and displays the centripetal force value and keeps, and data can be directly read when the rotor 6 stops moving, wherein the angular speed can be measured by a photoelectric counter or a frequency meter, the mass of the rotating object 10 can be weighed by a balance, and the radius can be directly measured by a ruler.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Centripetal force quantification experiment device, including base (1), its characterized in that: the top of the base (1) is respectively and fixedly provided with an adjustable speed motor (2) and a support (3), the adjustable speed motor (2) is positioned in the support (3), the output end of the adjustable speed motor (2) is fixedly provided with a rotating shaft (4), the top of the rotating shaft (4) is fixedly provided with a first square frame (5), the top of the first square frame (5) is fixedly provided with a rotating body (6), the rotating body (6) is fixedly provided with a straight scale (7), the bottom of the rotating body (6) is symmetrically provided with fixed pulleys (8) by taking a central line as a center, the two fixed pulleys (8) are positioned in the first square frame (5), supporting rods (9) are fixedly connected between the two sides of the bottom of the rotating body (6) and the two sides of the first square frame (5), objects (10) are hung on the two supporting rods (9), and the top of the rotating body (6) is fixedly provided with a second square frame (11), the top in the second square frame (11) is fixedly connected with a tension sensor (12).

2. A centripetal force quantification experimental apparatus according to claim 1, wherein: the bottom of the tension sensor (12), the fixed pulley (8) and the side edge of the object (10) are connected through a rope, and the rope penetrates through the top of the rotating body (6) and the side edge of the square frame I (5).

3. A centripetal force quantification experimental apparatus according to claim 1, wherein: the supporting rod (9) adopts a rigid supporting rod.

4. A centripetal force quantification experimental apparatus according to claim 1, wherein: the inside fixed mounting of support (3) has bearing (13), the quantity of bearing (13) is two, and two bearing (13) interlude sets up on pivot (4).

5. A centripetal force quantification experimental apparatus according to claim 1, wherein: the tension sensor (12) consists of a power supply, a tension sensor part, an amplifying circuit, an A/D (analog/digital) conversion circuit, a single chip microcomputer circuit and a display circuit.