365体育|365体育直播

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2011-04-28 18:24:18.0 ???α?????????

 

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1   ??????

???????????????????????????????????????????????????????????????????????????????????????????????51.30m???????614m3???1470t??????????????????36.5m???????21.8m????С??λ?20.9m???????25cm????С???10cm?????????1.8m???????47.4m???????????1???????????????????58??40cm??40cm??????????б??????????????10m????????????????????????????????????????н?????????????????68??30cm??30cm?????????????????Χ??????????????沼?ü??2??

2   ????????????

??????????????????棬??????????????????????????????????????????幹????????????????????????????????????????????????????绯??????????崥?????????????壬????????Ч??????10m?????????????б????

 

3   ????????????

3.1 ??????

????????????????????12m??

3.2 ??????????????

????????????????????????????????????210??225?????????α???????215??????????????10m?????????101.2m????????LP=101.2??(215??360)=60.90m??????????L1=101.2-60.90=40.30m??

3.3 ????????????????γ?

?????????????????????????????????????????????????????????????????????????????????????????4????????????б??????????????γ???????????????????????????????????????????????????????????

(1)????б?????2m?????÷?????????????????γ???

(2)????10m????????????????????????????????2m?????????????????????????????????1.2m?????????????1.5m????????????????????????????????????????

(3)??????б???????1.5m??

(4)?????????+12.Om?????????и?3????6m????1.2m???з?????????????????????嵹??????????????顣

3.4 ?????ü?????????

3.4.1??????????

????10m??????????20cm????????????32mm?????a=20cm?????b=20cm??????l=12cm??????K=2000g??m3?????????q=16g??

3.4.2???б???????????

???????????????215??????????????38??б???????????????????a=20cm??????l=25cm??????K=1500g??m3?????????q=50g??

3.4.3????????????????

???a=15cm??????l=20cm??????K=1.5kg??m3?????????q=20g??

3.5 ??????·?????

???α?????·???????ú????????????????????????????????25ms??10m????????????300ms?????б??????600ms?????????????????????????????????????????????????????γ??????????????????Щ???????δ????γ???????????·??

 

4   ??????????

(1)?????????????????????????????????????????????????????????λ?ü????????????????????????????????????????????????????????峹?????顣

(2)??????????λ???????????????????????????????????????赲???????????????????

 

5   ?????????

?????????????????????????????????????????????????????????????????????

5.1 ?????????

v1 = K??K??(Q1/3??R)?????α????????????40kg??????????????45m??K?150??K???0.3?????1.5?????????????v1 = O.94cm??s??

5.2 ?????????

??У?G?1470000kg????????h?20m???????v2 = 1.5cm??s??

??????????????????????????????????????????Χ???????????????????????赲????????????й??????????????????????????????40???????????????????????????????????????Σ????

 

6   ????Ч??

??4s?????????????????????????飬??????4??6m??????????????

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