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}Ŀ\ǶWıِĿDʾһl^\ӆTڰl^߅صͶSMNһijٶƳʹľPOУ߅һAεĠIDʾԈϱKoֹrxIAOhQؓͶSMNcIAOľx30m
1ِr\ӆTëˢ\ǰıĿ__________pСĦĶp\ӠBĸ׃
2ijΏͶS3m/sٶƳı15s\ӵxͶS30ĠIAO̎t@Εrg\ӵƽٶǶ________
3ɻrĥ|20Kgc|ĵes200cm2صwe810 -3 m3t@NrܶȞ________ͣڱϕrĉ_______gȡ10N/kg
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}ĿڌWţDһɡr̽w\ӵӰ푣҂DʾČ
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ٞʲôʹС܇ͬһ߶Ȼ______________________________________
ڷԽ⻬С܇ܵԽ_______С܇ǰMľxԽ_____С܇ٶȜpСľԽ____________
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}ĿD䓗l¶˹̶.FքeòͬȥlABCDķN׃F1 = F2 = F3 F4t
(1)fЧĴСPĈD_________________.
(2)fЧcPĈD _______________ .
(3)fЧķPĈD___________________.
(4)ڱУСAõо ___________________.
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}ĿDʾǡ̽ܵĴСcЩPČbã
1ͨ^^ ĴСДСܵĴС@NWϷQ x׃ȷDQ
2̽ܵĴСcٶȵPϵrԓx| ăɂСб ߶oֹL£xͬͬ
3ijͬWbá̽ܵĴСc|Pϵͬ|Сбoֹɻӛ䛔£
|m/g | 0.1 | 0.15 | 0.20 | 0.25 | 0.30 | 0.35 | 0.40 |
ľKоxS/m | 0.12 | 0.10 | 0.12 | 0.12 | 0.11 | 0.13 | 0.12 |
ԓͬWόówĄܴСc|oPJ錍YՓcǷ xJFˌFҪԭ
4|ٶһܵӰ^أijdȤСMٶȂxó˃ɽMһͱʾ
һײrٶv=8cms1
̖ | |m/g | ľKоxs/cm |
1 | 100 | 10 |
2 | 200 | 20 |
3 | 300 | 30 |
|m=100g
̖ | ײٶv/cms1 | ľKоxs/cm |
1 | 8 | 10 |
2 | 16 | 40 |
3 | 24 | 90 |
@ɽMԵw wĄӰ^
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