2
0
1
4
骞?/p>
涓?/p>
鑰?/p>
鐗?/p>
鐞?/p>
涓?/p>
楂?/p>
妗?/p>
鍘?/p>
杞?/p>
棰?/p>
涓?/p>
棰?/p>
璁?/p>
缁?/p>
1
銆佷负浜嗗皢鏀剧疆鍦ㄦ按骞冲湴闈笂銆侀噸
G=
100
N
鐨勯噸鐗╂彁鍗囧埌楂樺銆傚皬鏄庡悓瀛﹁璁′簡鍥?/p>
24
锛堢敳锛夋墍绀虹殑婊戣疆缁勮
缃�傚綋灏忔槑鐢ㄥ浘
24
锛堜箼锛夋墍绀洪殢鏃堕棿鍙樺寲鐨勭珫鐩村悜涓嬫媺鍔?/p>
F
鎷夌怀鏃讹紝閲嶇墿鐨勯�熷害
蠀
鍜屼笂鍗囩殑楂樺害
h
闅忔椂闂?/p>
t
鍙樺寲鐨勫叧绯诲浘鍍忓垎鍒鍥?/p>
24
锛堜笝锛夊拰锛堜竵锛夋墍绀恒�傝嫢閲嶇墿涓庡湴闈㈢殑鎺ヨЕ闈㈢Н
S=
5脳10
-2
m
2
锛屼笉璁℃懇鎿︼紝缁冲婊?/p>
杞殑鎷夊姏鏂瑰悜鍧囧彲鐪嬫垚鍦ㄧ珫鐩存柟鍚戙�傛眰锛?/p>
锛?/p>
1
锛夊湪
2~3s
鍐咃紝鎷夊姏
F
鐨勫姛鐜?/p>
P
鍙婃粦杞粍鐨勬満姊版晥鐜?/p>
畏
銆?/p>
锛?/p>
2
锛夊湪
1~2s
鍐咃紝鎷夊姏
F
鍋氱殑鍔?/p>
W
銆?/p>
锛?/p>
3
锛夊湪
0~1s
鍐咃紝閲嶇墿瀵瑰湴闈㈢殑鍘嬪己
p
銆?/p>
2
銆佸鍥剧敳鎵�绀猴紝鏄煇宸ュ巶鐨勬按骞充紶閫佸甫涓婄殑浜у搧杩愯緭鍙婅鏁拌缃ず鎰忓浘銆傚叾涓紝
鐢?/p>
婧?/p>
鐢靛帇涓?
3V
锛屽畾鍊肩數闃?/p>
R
0
鐨勯樆鍊间负
200惟
锛?/p>
S
涓烘縺鍏夊厜婧愶紝鑳藉彂灏勪竴鏉＄矖缁嗗拷鐣ヤ笉璁?/p>
鐨?/p>
鍏?/p>
绾匡紱
R
涓哄厜鏁忕數闃伙紝褰撴湁鍏夌収灏勬椂锛屽叾闃诲�艰緝灏忥紝鏃犲厜鐓у皠鏃讹紝鍏堕樆鍊艰緝澶с�傛按骞充紶
閫?/p>
甯?
涓婄殑浜у搧鍧囨槸瀵嗗害
蟻 =2.5 x 1
0
3
kg/m
3
鐨勭浉鍚屾鏂逛綋銆傚綋姘村钩浼犻�佸甫涓婄殑浜у搧鍜屼紶閫?
甯?/p>
涓�
璧蜂互閫熷害
v
=0.5m/s
鍖�閫熼�氳繃
S
涓?/p>
R
涔嬮棿鏃讹紝灏勫悜鍏夋晱鐢甸樆鐨勫厜绾胯浜у搧鎸′綇锛屽厜绾?/p>
濮?/p>
缁?/p>
涓庢鏂逛綋闈犺繎鍏夋簮涓�渚х殑琛ㄩ潰鍨傜洿锛?/p>
閫氳繃鐢靛帇琛ㄦ祴鍑哄厜鏁忕數闃?/p>
R
涓ょ鐢靛帇闅忔椂闂村彉鍖?
鐨?/p>
瑙?
寰嬪鍥句箼鎵�绀?/p>
(g = 10N/kg)
銆?/p>
鍒?/p>
:
锛氣憼瀹氬�肩數闃?/p>
Ro
娑堣�楃殑鏈�澶у姛鐜囨槸澶氬皯锛?/p>
鈶℃按骞充紶閫佸甫瀵规瘡涓骇鍝佺殑鏀寔鍔涗负澶氬皯锛?/p>
3
銆佸搴鍐呰淇鐢ㄥ埌鏌愮娑蹭綋涔欑儻鏉愭枡鍜屼笁娣风矇锛?/p>
宸ヤ汉甯堝倕浣跨敤鍔犵儹涓庢悈鎷屼负涓�浣撶殑鐢ㄧ數鍣紝
涓嬪浘鏄鐢ㄧ數
鍣ㄧ殑宸ヤ綔鍘熺悊鍥俱�傚厛鍦ㄥ娓╀笅鎶婃恫浣撲箼鐑潗鏂欐斁鍏ュ鍣?/p>
涓紝
娓╂帶鏃嬭浆寮�鍏虫帴
ab
寮�濮嬪姞鐑紝
鍙戝厜浜屾瀬绠℃甯稿彂鍏夛紝
褰撴恫浣撴俯搴﹁揪鍒?/p>
70
鈩冿紱娓╂帶鏃嬭浆寮�鍏宠嚜鍔ㄦ帴
cd
锛屽彂鍏変簩鏋佺鐔勭伃锛岀數鍔ㄦ満璧峰姩锛屽啀鍊掑叆涓夋贩绮夊湪瀹瑰櫒涓繚娓?/p>
鎼呮媽锛屾悈鎷屽潎鍖�鍚庯紝娑傛姽鍒板澹佷笂浣夸箣鏇村姞骞虫粦鐗㈠浐銆傛棆杞紑鍏虫帴
ab
鏃剁數璺秷鑰楀姛鐜囦负
1522W
锛屾棆杞紑鍏虫帴
cd
鏃剁數璺秷鑰楀姛鐜囦负
1200W
锛岀數鍔ㄦ満姝ｅ父宸ヤ綔鐨勫姛鐜囦负
1100W
锛屽彂鍏変簩鏋佺
L
瑙勬牸涓衡�?/p>
2V 0.2W
鈥濓紝
R
1
鏄姞鐑?/p>
鐢电儹涓濓紝
R
2
鏄繚娓╃數鐑笣锛?/p>
R
0
涓轰繚鎶ゅ彂鍏変簩鏋佺姝ｅ父宸ヤ綔鐨勯檺娴佺數闃汇�?/p>
(
蹇界暐娓╁害瀵圭數闃荤殑褰卞搷
)
锛?/p>
1
锛夌敤鐢靛櫒姝ｅ父宸ヤ綔鏃讹紝姹備繚娓╃數鐑笣
R
0
鐨勭數闃诲�笺�?/p>
锛?/p>
2
锛夋恫浣撲箼鐑潗鏂欒川閲忎负
6kg
锛屽垵娓╀负
20
鈩冿紝姹傛俯鎺ф棆杞紑鍏虫帴
ab
寮�濮嬪姞鐑埌鍒氭帴
cd
鏃讹紝娑蹭綋涔欑儻鏉愭枡鍚?/p>
鏀朵簡澶氬皯鐑噺銆?/p>
C
娑?/p>
=1.8
脳
10
3
J
锛?/p>
(kg
鈩?/p>
)
銆?/p>
t
/s
1
3
0
2
F
/N
涔?/p>
10
50
30
20
40
t
/s
1
3
0
2
蠀
/
锛?/p>
m/s
锛?/p>
涓?/p>
1
锛?/p>
25
2
锛?/p>
50
2
锛?/p>
50
t
/s
1
3
0
2
h
/m
涓?/p>
1
锛?/p>
25
3
锛?/p>
75
F
G