Experimental approach for researching projectile motion using digital technology

A technology of technical research and experimental methods, applied in educational appliances, instruments, teaching models, etc., can solve problems such as cumbersome operation, eye damage, and long experimental time.

Inactive Publication Date: 2008-01-23
ZHEJIANG UNIV CITY COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There are following defects in the prior art: 1, stroboscopic flicker in the multiple exposure method has certain damage to people's eyes
2. The solut

Method used

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  • Experimental approach for researching projectile motion using digital technology
  • Experimental approach for researching projectile motion using digital technology
  • Experimental approach for researching projectile motion using digital technology

Examples

Experimental program
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Embodiment Construction

[0012] The experimental method of applying digital technology to study the motion of projectiles includes using a digital camera to shoot a small steel ball projected from a U-shaped track inclined to the horizontal plane and moving in parallel along a screen drawn with centimeter squares, and using Premiere The software can intercept pictures from the animation and use Photoshop software to obtain projectile trajectory diagrams. Record the X and Y values ​​of the small steel ball coordinates corresponding to each time on the picture, use the table difference method to obtain the moving speed of the small steel ball in the horizontal direction, the moving speed and acceleration in the vertical direction, and calculate the horizontal and vertical directions of the small steel ball equation of motion.

[0013] Horizontal motion equation: X=X 0 +V x t;

[0014] The equation of motion in the vertical direction: Y = Y 0 ...

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Abstract

The invention discloses an experimental method for studying the motion of projectile with the application of digital technology, which comprises: adopt digital camera to take the image of small steel ball that is cast from an U-shape track that forms an inclination angle with level surface; an animation picture that flies over a face plate drawn with centimeter checks; save the animation picture taken by the digital camera in a computer; capture single stilled picture from the image via Premiere software; acquire the ball casting track chart from the captured single stilled image via Photoshop software; record the value of a X coordinate and a Y coordinate of small steel ball at corresponding time in the image; work out the horizontal motion speed, longitudinal motion speed and acceleration of the small steel ball with tabular difference method; calculate the formula for the horizontal and longitudinal motion of the small steel ball. Therefore, the invention, which applies digital technology for the study of projectile motion, is able to complete the making of projectile motion track chart within 3 lecture hours and record relevant experiment data.

Description

technical field [0001] The invention relates to a method for studying the motion of a projectile, in particular to a method for studying the motion of a projectile with a digital camera and a computer. Background technique [0002] Conventional projectile motion research experiments use multiple exposures and film cameras. The multiple exposure method is to expose the film once at regular intervals. During the ball throwing process, the position of the ball at different times is recorded on a piece of film, the photos are developed, and after the picture is enlarged by a film enlarger, the position of the ball is read out and the throwing process is analyzed. There are following defects in the prior art: 1. Stroboscopic flicker in the multiple exposure method will cause certain damage to people's eyes. 2. The solution in the photo development process of ordinary cameras pollutes the environment. 3. The operation is more complicated. 4. The experiment time is too long. ...

Claims

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Application Information

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IPC IPC(8): G09B23/10
Inventor 杜金潮陈守川钟伟民高洪亮李晓勤
Owner ZHEJIANG UNIV CITY COLLEGE
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