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一維運動 斯頌平、張惠菁

一維運動 斯頌平、張惠菁. 目的 利用光電閘研究物體在無摩擦斜面上的運動，並由物體之加速度，計算出重力加速度。. 原理 - 重力加速度. F=mgsin q (1) sin q =h/s (2) F=ma (3) from (1) (3) a=gsin q (4) from (2) (4) g=a ‧ s/h. 等加速度運動. △ V=V-V O =at. 實驗裝置. 加速度實驗數據. s=150cm, h=5.0cm. Δ V-t 圖. g=24×150/5.0 =7.5×10 2 cm/s 2.

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一維運動 斯頌平、張惠菁

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  1. 一維運動 斯頌平、張惠菁

  2. 目的 利用光電閘研究物體在無摩擦斜面上的運動，並由物體之加速度，計算出重力加速度。

  3. 原理-重力加速度 F=mgsinq (1) sinq=h/s (2) F=ma (3) from (1) (3) a=gsinq(4) from (2) (4) g=a‧s/h

  4. 等加速度運動 △V=V-VO=at

  5. 實驗裝置

  6. 加速度實驗數據 s=150cm, h=5.0cm

  7. ΔV-t 圖 g=24×150/5.0 =7.5×102cm/s2

  8. x-t 圖 g=17×2×150/5.0 =1.0×103cm/s2

  9. 結論: 我們利用光電閘量測物體在無摩擦斜面上的運動。由V-t圖與x-t圖量測出重力加速度g分別為7.5×102，1.0×103cm/s2。誤差分別為23%與2%。

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