Experimenter for automatically recording horizontal projectile motion trails

Abstract

An 'experimenter for automatically recording horizontal projectile motion trails' is characterized in that a bottom plate is fixed by base fastening screws, balance adjusting bolts are used for adjusting longitudinal and horizontal bubbles to be balanced so as to guarantee the bottom plate to be horizontal, bubble levels are longitudinally and horizontally mounted in the bottom plate, needle bearing holes are drilled at four corners of the bottom plate, needle bearings are mounted in the bottom plate, balance adjusting screws are mounted in the needle bearings and easily movable in adjustment, a motion trail graph experimental bracket groove is mounted in a motion trail graph experimental bracket, a magnetic stripe is mounted in a magnetic stripe slot, an outer frame is used for supporting a heavy hammer, a trail graph board, a trail graph board chute, a ball falling baffle, a ball falling baffle adjuster, a steel ball rail, a steel ball rail fixing strip and a magnetic steel ball, the heavy hammer guarantees the experimental bracket to be perpendicular, the trail graph board is mounted in the trail graph board chute and is of a three-layer structure in design, a permanent-magnet magnetic core and missible oil are filled in mesh holes in the interlayer, the trail graph board is used with the magnetic steel ball and a magnetic eraser, images can be smoothly recorded and flexibly eliminated by the principle of repelling of like poles and attraction of unlike poles of permanent magnetism, a cotton thickened plate mounted in a ball falling baffle groove stops the steel ball from moving randomly in falling, the ball falling baffle adjuster is used for controlling falling height of the steel ball, the steel ball rail is used for ensuring the steel ball trail unchanged during each fixed experiment, the steel ball rail fixing strip made of aluminum alloy is drilled with holes at different positions so as to determine the steel ball rail not to move during each fixing and can be used for movably adjusting the steel ball rail, magnetic force of the magnetic steel ball passes through the trail graph board during horizontal projectile, the images are recorded by the principle of attraction of unlike poles of permanent magnetism, the trail graph board can be taken out conveniently by a through groove arranged on the upper side of the outer frame, and the steel ball motion trails can be clearly seen.

Description

technical field [0001] The invention is a new type of physical experiment teaching equipment which improves the flat throwing motion curve of the physical experiment from manual marking to automatic marking recording and saves students' learning time. Background technique [0002] Some current physical flat throwing experiment instruments use coordinate paper instead of white paper, and use a pencil to try to find out the position of the ball passing by and record it. However, when doing this experiment at the table, it is difficult to record the origin of the coordinates accurately. During the experiment, it is difficult to keep the relative position of the board and the chute unchanged. Using a pencil to find the position of the ball passing by, the experimental error is also relatively large, and the experimental results are not satisfactory. After careful study and repeated practice in the experimental class, A brand-new experimental instrument was produced, which retain...

AI Technical Summary

Problems solved by technology

[0002] Some current physical flat throwing experiment instruments use coordinate paper instead of white paper, and use a pencil to try to find out the position of the ball passing by and record it. However, when doing this experiment at the table, it is difficult to record the origin of the coordinates accurately. During the experiment, it is difficult to keep the relative position of the board and the chute unchanged. Using a pencil to find the position of the ball passing by, the experimental error is also relatively large, and the experimental results are not satisfactory. After careful study and repeated practice in the experimental class, A brand-new experimental instrument was produced, which retained all the teaching requirements of the textbook and all the advantages of the original experimental equipment, absorbed its advanced ideas and methods, and carried out ingenious design, so that the coordinate origin, Any position it passes can be quickly and accurately found, and the trajectory of the movement can be recorded at the same time. The experiment is carried out on the desktop, and the ball's landing point is all recorded in the box of the experimental instrument's graphics board. The ball will not roll randomly. The experimental operation is very simple, the measurement data is more accurate, the expected teaching goal and the best teaching effect can be achieved, and it can also be widely used in the experiment, saving students' study time

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