2   ???????????????

???????????????????????????????????????6????????????????(????)??????????????????????????????????λ????????????????????????(?????)???????6????????(???)???????????(???2)??

3   ??????????

3.1 ??????

3??1??1???????

????????????l??4???崦???????????????????????????????????????????????????????????????????ù????У?????????????????·??????????????鹰???????????????????????????Χ(?????????)???????4m??l??4???崦3m????????3??5m??

(1)????????????????????1??36m????????L=1??1m?????a=0??4m????????????????L=O??30??0??35m??????=0??40m????????磺0??96m??2??5m??10??3m???????????a??b=0??5m??0??4m????????1??8m??

(2)1??4???崦?????????????????1??26??1??36m????????L=1??0??1??1m?????a=0??4m??????????(????)??????L=0??30??0??35m?????a=0??40m??

(3)???????????????????????1??44??1??6m????????L=1??2??1??4m?????a=0??4??0??5m?????????????1????????????L=0??35??0??55m?????a=O??40m??

(4)?????????????????????????????????????0??5m??0??55m????С?????W=0??25m????????L=O??30m?????a=0??35m??

????2????????????????????????1??9m??????÷???β????????????a??b=0??5m??0??5m????????L=1??4m??????H???????η???H=0??5??4m??

3??1??2????????

????????????????ú???????????????(?2)?????????????????????????????????

(1)????????????????????H=5m????????????H=1??2m(?2)??

(2)?????á?????????1??2m??????L=0??7??0??9m???????????????????a=0??25m??

3.2 ????????

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

q = KBaH

???  K?????????????????????????K=1??8??2??2kg??m³??????????K=1??5kg??m³?????????????????

B?????????????????????

H??????????????

??????????????????????????????????????????????1?????

3.3 ???????

???÷????????????·??????????????????·(???)?????????????????????????????????????????????????(??????)??????

?????????????·(???)??????????????????????·???????·(????????)????2??????????????·?????????????β????????????????????????·????????????????·?????????У???????????????????????·??Ч????????·????????????????????????????????·??????????????????·????????????·??????????????·???????????????????·?????????????????????????????????г?????????????????

????????·?????????????????1??4????????????????????????????????????????????????·(???)?????????????·(???)???????????·(????????)?????????·?У????????????????????????(16??20??)?????(??9??)??????????????????????????????????????????γ?????籬??·??????????????

4   ??????????????

4.1 ?????????

????????????涨????????????????v??10cm??s????????????51kg????

????????80m????·?????????v=1??48cm??s?????????

4.2 ??????????

??????????????5lkg???????????Χ?????Χ????????????????????????????????????????????????????????????????????????????

(1)?????ж??????????????????????????????????????????????????????????????????????????????????λ??

(2)???????????????????ò????????

(3)?????????????200m??Χ???????????????????????????????????

5   ????Ч??????

?????????????????2003??6??15??16??30???????????????????????????????(???3??)??

????????岿??????????????λ????????????????????????й???????????????(????????)??????????(????)??????????????????2??3m?????山??????2????????????????????????????λ?????ù???????2?????????????????????????????????????????????????γ?????????????????顣??????1??4???崦?????÷?????????????????????????????????Ч??????????????????????????????

????????????????????????????????????????????????Ч????

6   ????

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?????й?????????????????