| 摘要 |
<p>PURPOSE:To provide the experiment device for gravitation which can easily experiment gravitation through button operation and obtain an accurate measured value. CONSTITUTION:This device is equipped with a base which is erected on a table, a stopwatch with a start/stop button 21 and a reset button 22, a ball feeding mechanism 5 which is open slantingly above a start table with a released claw, a sense lever for a falling ball, a ball sensing part which has an opening/closing lid and a lid closing mechanism, a one-system pressing mechanism wherein a lever connecting a start simultaneous mechanism which places the stopwatch in operation by falling the ball by opening the claw and pressing the start/stop button 21 and a stop means which stops the stopwatch associatively with the sense lever to respective systems is formed in a halfway automatic switching system, and a reset mechanism which sets a display to zero with the reset button 22 pressed and supplies the ball to the start table from the ball feed mechanism 5 to open the opening/closing lid.</p> |
