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Simple pendulum

A single pendulum and photoelectric gate technology, applied in the field of teaching and experimental equipment, can solve the problems of failing to satisfy teachers and students, failing to realize the acceleration of gravity, and unfavorable students' divergent thinking and scientific attitude.

Inactive Publication Date: 2010-02-17
屈社文
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The principle and application of the simple pendulum is an important knowledge point in high school physics courses. The textbook uses a lot of space to introduce it. When doing the middle school physics experiment cycle, there is an error in judging the starting position of the pendulum due to human reaction time. , so that the measurement results are not accurate enough. Although the average value measurement method is adopted in the teaching materials, the results are still not completely accurate; in addition, the existing simple pendulum can realize the adjustment of the swing amplitude, the quality of the pendulum ball, and the length of the pendulum, but it cannot realize the gravity The adjustment of acceleration fails to meet the needs of teachers and students to conduct inquiry experiments, and is not conducive to the cultivation of students' divergent thinking and rigorous scientific attitude

Method used

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Embodiment Construction

[0015] Below in conjunction with accompanying drawing the present invention is described in detail, the present invention comprises single pendulum support 1, pendulum rope 2, pendulum ball 3, also comprises a U-shaped support 4, a laser pointer 5 that is fixed on one end of U-shaped support and a The other end of the U-shaped support has a light-receiving hole on the watch case that is facing the laser pointer to emit the laser beam. An electronic stopwatch 6 with a photoelectric gate circuit element that controls the timing of the stopwatch is at the bottom of the U-shaped support, at the balance position of the pendulum. A device 7 that can generate a magnetic force field is set below the pendulum. At the fixed point of the pendulum rope on the single pendulum support 1, a protractor 8 is set on a plane parallel to the pendulum ball motion plane. The electronic stopwatch includes a control stopwatch timing The photogate circuit 60 and the three buttons S 1 61. S 2 62. S 3...

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Abstract

The invention provides a simple pendulum comprising a simple pendulum support, a pendulum rope and a pendulum ball. The simple pendulum also comprises a laser pointer and an electronic stopwatch. Thelaser beams sent out by the laser pointer are used as control signals. The case of the electronic stopwatch is provided with light receiving holes and the electronic stopwatch is provided with a photoelectric gate circuit capable of controlling stopwatch timing. The laser pointer is fixed at one end of a U-shaped support and the electronic stopwatch over against the laser beams sent out by the laser pointer is fixed at the other end of the U-shaped support. A device capable of generating the magnetic field is arranged below the equilibrium position of the simple pendulum. At the fixed point ofthe pendulum rope on the simple pendulum support, a protractor is arranged on a plane parallel with the plane of motion of the pendulum ball. The zero graduation line of the protractor and the plumbline coincide, and then the graduation lines of 1-90 degrees are marked symmetrically at the left and right sides of the protractor.

Description

Technical field: [0001] The invention relates to a teaching experiment appliance, in particular to an experiment appliance for exploring the period of a simple pendulum. Background technique: [0002] The principle and application of the simple pendulum is an important knowledge point in the high school physics course. The textbook uses a lot of space to introduce it. When doing the middle school physics experiment cycle, there is an error in judging the starting position of the pendulum due to human reaction time. , so that the measurement results are not accurate enough. Although the average value measurement method is used in the teaching materials, the results are still not completely accurate; in addition, the existing simple pendulum can realize the adjustment of the swing amplitude, the quality of the pendulum ball, and the length of the pendulum, but it cannot realize the gravity The adjustment of acceleration fails to meet the needs of teachers and students to condu...

Claims

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Application Information

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IPC IPC(8): G09B23/10G04F7/04
Inventor 屈社文
Owner 屈社文