2-1
銆佸鍥?/p>
2-4
锛?/p>
a
锛夋墍绀?/p>
U
鍨嬬娴嬪帇璁″唴瑁呮湁姘撮摱锛?/p>
U
鍨嬬宸︾涓庤鏈夋恫浣撶殑瀹?/p>
鍣ㄧ浉杩烇紝鍙崇寮�鍙ｄ笌澶ф皵鐩搁�氾紝宸茬煡锛?/p>
mm
h
mm
h
30
,
20
1
飥?/p>
飥?/p>
锛屽鍣ㄥ唴娑蹭綋涓烘按锛?
姘撮摱鐨勫瘑搴︿负
3
3
/
10
6
.
13
m
kg
飩?/p>
銆?/p>
锛?/p>
1
锛?/p>
锛?/p>
1
锛?/p>
璇曞埄鐢ㄩ潤鍘嬪姏鍩烘湰鏂圭▼涓瓑鍘嬮潰鐨勬蹇碉紝璁＄畻
A
鐐圭殑鐩稿鍘嬪姏鍜?
缁濆鍘嬪姏銆?/p>
锛?/p>
2
锛?/p>
锛?/p>
2
锛?/p>
鍙堝鍥?/p>
2-4
锛?/p>
b
锛?/p>
鎵�绀猴紝
瀹瑰櫒鍐呰鏈夊悓鏍风殑姘达紝
mm
h
mm
h
30
,
15
1
飥?/p>
飥?/p>
璇曟眰
A
鐐瑰鐨勭湡绌哄害鍜岀粷瀵瑰帇鍔涖�?/p>
锛?/p>
3
锛?/p>
瑙ｏ細
锛?/p>
1
锛夊彇
B-C
涓虹瓑鍘嬮潰锛堣鍥?/p>
2-4a
锛?/p>
U
褰㈡祴鍘嬭鍙虫敮
飥?/p>
飥?/p>
1
h
h
g
p
c
飥?/p>
飥?/p>
姹?/p>
飦?/p>
U
褰㈡祴鍘嬭鍙虫敮
1
gh
p
p
A
B
姘?/p>
飦?/p>
飥?/p>
飥?/p>
鍥犱负
C
B
p
p
飥?/p>
锛屾墍浠?/p>
飥?/p>
飥?/p>
1
1
h
h
g
gh
p
c
A
飥?/p>
飥?/p>
飥?/p>
姹?/p>
姘?/p>
飦?/p>
飦?/p>
1
)
(
gh
gh
p
c
A
姘?/p>
姹?/p>
姹?/p>
飦?/p>
飦?/p>
飦?/p>
飥?/p>
飥?/p>
飥?/p>
=13.6
脳
10
3
脳
9.81
脳
0.20+9.81
脳
0.3
锛?/p>
13.6
脳
10
3
-10
3
锛?/p>
=63765N/
銕?/p>
浠ヤ笂鎵�寰楃粨鏋滀负鐩稿鍘嬪姏锛?/p>
A
澶勭殑鍘嬪姏涓虹粷瀵瑰帇鍔?/p>
飥?/p>
缁?/p>
a
p
0.101+0.064=0.165MPa
锛?/p>
2
锛夊彇
B-C
涓虹瓑鍘嬮潰锛堣鍥?/p>
2-4b
锛?/p>
锛屽帇鍔?/p>
c
p
绛変簬澶ф皵鍘嬪姏
a
p
锛屾晠
a
C
B
p
p
p
飥?/p>
飥?/p>
鎵�浠?/p>
)
(
2
1
gh
gh
p
p
B
A
姹?/p>
姘?/p>
飦?/p>
飦?/p>
飥?/p>
飥?/p>
飥?/p>
=101325-10
3
脳
9.81
脳
0.15-13.6
脳
10
3
脳
9.81
脳
0.3
=59828Pa
鈮?/p>
0.06MPa
浠ヤ笂璁＄畻缁撴灉涓虹粷瀵瑰帇鍔涳紝鐪熺┖搴︿负
0.04MPa
41497Pa
59828
-
101325
飩?/p>
飥?/p>
飥?/p>
飥?/p>
A
a
p
p
2-2
銆佸鍥?/p>
2-7
鎵�绀虹殑涓ょ瀹夊叏闃�锛岄榾鑺殑褰㈢姸鍒嗗埆涓虹悆褰㈠拰鍦嗛敟褰紝闃�搴у瓟鐩?/p>
寰?/p>
d=10
銕滐紝閽㈢悆鍜岄敟闃�鐨勬渶澶х洿寰?/p>
D=15
銕溿�傚綋娌规恫鍘嬪姏
p
1
=10MPa
鏃讹紝鍘嬪姏
娌瑰厠鏈嶅脊绨у姏椤跺紑闃�鑺�屾孩娌癸紝婧㈡补鑵旀湁鑳屽帇
p
2
=0.5MPa
锛岃瘯姹備袱闃�寮圭哀鐨勯绱?