PHY 實驗...求g?
因為我要設計一個實驗...我就想做一個實驗證明g真係=9.8我想用唔同既波去度free falling 個time... 但係我又搵唔到個final speed..
有咩方法可以求個g=9.8?:sacchi:
唔該各位!
:icon099: 係地球上g係永遠唔會去到9.8 ga wor:icon101: Originally posted by 2076 at 2005-9-12 04:31 PM:
係地球上g係永遠唔會去到9.8 ga wor:icon101:
咁係唔係approx 9.8?:icon045: Originally posted by 史高深 at 2005-9-12 05:00 PM:
咁係唔係approx 9.8?:icon045:
因為有air resistance既關係,
個g大約只會有maybe 3-4 m/s^2:icon101: Originally posted by 2076 at 2005-9-12 17:06:
因為有air resistance既關係,
個g大約只會有maybe 3-4 m/s^2:icon101: 如果佢有vaccum個model呢?:icon101: Originally posted by Raul at 2005-9-12 05:07 PM:
如果佢有vaccum個model呢?:icon101:
v^2=u^2+2as:icon032:
用data logger Originally posted by 2076 at 2005-9-12 05:06 PM:
因為有air resistance既關係,
個g大約只會有maybe 3-4 m/s^2:icon101:
我用羽毛aiir resistance當然好多...如果我用球體...個air resistance 會唔會細d呢?
請指教!!:icon117: Originally posted by 史高深 at 2005-9-12 05:15 PM:
我用羽毛aiir resistance當然好多...如果我用球體...個air resistance 會唔會細d呢?
請指教!!:icon117:
air resistance is directly proportional to its velocity ga:icon032:
其實我d phy只係半桶水...
幫唔到你幾多:icon049: Originally posted by 2076 at 2005-9-12 05:18 PM:
air resistance is directly proportional to its velocity ga:icon032:
其實我d phy只係半桶水...
幫唔到你幾多:icon049:
anyway....thx !!!:o Originally posted by 2076 at 2005/9/12 05:06 PM:
因為有air resistance既關係,
個g大約只會有maybe 3-4 m/s^2:icon101:
唔會咁細架 :icon101:
上次我唔見左條 ticker tape
作九點零都比呀 sir 懷疑
(原來其他人正常咁做都做到九點幾)
一張 bench 既高度點都唔會有咁勁 air resistance :icon101:
btw, i suggest to use the ticker tape timer
舊就舊 d
不過超方便 :icon082: Originally posted by vctwl at 2005-9-12 07:28 PM:
唔會咁細架 :icon101:
上次我唔見左條 ticker tape
作九點零都比呀 sir 懷疑
(原來其他人正常咁做都做到九點幾)
一張 bench 既高度點都唔會有咁勁 air resistance :icon101:
btw, i suggest to use...
就想唔用ticker tape去搵law...
不過我又諗唔到...:icon099: Originally posted by 史高深 at 2005-9-12 07:58 PM:
就想唔用ticker tape去搵law...
不過我又諗唔到...:icon099:
係喎 唔記得ticker tape添...
我諗唔用data logger最好就係用依個la:icon032: Originally posted by 2076 at 2005-9-12 08:01 PM:
係喎 唔記得ticker tape添...
我諗唔用data logger最好就係用依個la:icon032:
咩係data logger ??
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