| 摘要 |
PURPOSE: Study supplies using a spring are provided to easily know a relation between resistance and a movement distance. CONSTITUTION: Study supplies using a spring are composed of a moving path, a projectile, a launcher, and a sensor. The moving path changes a friction coefficient. The projectile is moved on the moving path. The launcher actually applies power to a main body. The sensor is attached to a wall to measure time and a distance. The study supplies obtain force, mass, and acceleration in a predetermined section and at a specific time according to user selection. [Reference numerals] (3) Picture of final work and specification of components |
