绗?/p>
6
绔?/p>
浣?/p>
涓?/p>
6
鈥?/p>
1
浠�涔堟槸闈欏钩琛?/p>
?
浠�涔堟槸鍔ㄥ钩琛?/p>
?
鍚勮嚦灏戦渶瑕佸嚑涓钩琛″钩闈?/p>
?
闈欏钩琛°�佸姩骞宠 鐨勫姏瀛︽潯浠跺悇
鏄粈涔?/p>
?
6
鈥?/p>
2
鍔ㄥ钩琛＄殑鏋勪欢涓�瀹氭槸闈欏钩琛＄殑锛屽弽涔嬩害鐒讹紝瀵瑰悧
?
涓轰粈涔?/p>
?
鍦ㄥ浘绀?/p>
锛?/p>
a
锛?/p>
锛?/p>
b
锛変袱鏍规洸杞?/p>
涓紝
璁惧悇鏇叉嫄鐨勫亸蹇冭川寰勭Н鍧囩浉绛夛紝
涓斿悇鏇叉嫄鍧囧湪鍚屼竴杞村钩闈笂銆?/p>
璇曡鏄庝袱鑰呭悇澶勪簬浣曠骞?/p>
琛＄姸鎬?/p>
?
绛旓細鍔ㄥ钩琛＄殑鏋勪欢涓�瀹氭槸闈欏钩琛＄殑锛?/p>
鍙嶄箣涓嶄竴瀹氥�?/p>
鍥犲悇鍋忓績璐ㄩ噺浜х敓鐨勫悎鎯�у姏涓洪浂鏃讹紝鍚?/p>
鎯�у姏鍋朵笉涓�瀹氫负闆躲�?/p>
锛?/p>
a
锛夊浘澶勪簬鍔ㄥ钩琛＄姸鎬侊紝
锛?/p>
b
锛夊浘澶勪簬闈欏钩琛＄姸鎬併�?/p>
6
涓�
3
鏃㈢劧鍔ㄥ钩琛＄殑鏋勪欢涓�瀹氭槸闈欏钩琛＄殑锛?/p>
涓轰粈涔堜竴浜涘埗閫犵簿搴︿笉楂樼殑鏋勪欢鍦ㄤ綔鍔ㄥ钩琛′箣
鍓嶉渶鍏堜綔闈欏钩琛?/p>
?
6
鈥?/p>
4
涓轰粈涔堜綔寰�澶嶈繍鍔ㄧ殑鏋勪欢鍜屼綔骞抽潰澶嶅悎杩愬姩鐨勬瀯浠朵笉鑳藉湪鏋勪欢鏈韩鍐呰幏寰楀钩琛★紝鑰?/p>
蹇呴』鍦ㄥ熀搴т笂骞宠
?
鏈烘瀯鍦ㄥ熀搴т笂骞宠 鐨勫疄璐ㄦ槸浠�涔?/p>
?
绛?/p>
鐢变簬鏈烘瀯涓綔寰�澶嶈繍鍔ㄧ殑鏋勪欢涓嶈鍏惰川閲忓浣曞垎甯冿紝
璐ㄥ績鍜屽姞閫熷害鐬績鎬绘槸闅忕潃鏈烘鐨?/p>
杩愬姩鍛ㄦ湡鍚勬部涓�鏉″皝闂洸绾垮惊鐜彉鍖栫殑锛?/p>
鍥犳涓嶅彲鑳藉湪涓�涓瀯浠剁殑鍐呴儴閫氳繃璋冩暣鍏惰川閲忓垎甯?/p>
鑰岃揪鍒板钩琛★紝
浣嗗氨鏁翠釜鏈烘瀯鑰岃█锛?/p>
鍚勬瀯浠朵骇鐢熺殑鎯�у姏鍙悎鎴愪负閫氳繃鏈烘瀯璐ㄥ績鐨勭殑鎬绘儻鎬у姏
鍜屾�绘儻鎬у姏鍋剁煩锛岃繖涓�绘儻鎬у姏鍜屾�绘儻鎬у姏鍋剁煩鍏ㄩ儴鐢辨満搴ф壙鍙楋紝鎵�浠ュ繀椤诲湪鏈哄骇涓婂钩琛°�?/p>
鏈烘瀯鍦ㄥ熀搴т笂骞宠 鐨勫疄璐ㄦ槸骞宠 鏈烘瀯璐ㄥ績鐨勬�绘儻鎬у姏锛?/p>
鍚屾椂骞宠 浣滅敤鍦ㄥ熀搴т笂鐨勬�绘儻鎬у姏鍋?/p>
鐭┿�侀┍鍔ㄥ姏鐭╁拰闃诲姏鐭┿�?/p>
6
鈥?/p>
5
鍥剧ず涓轰竴閽㈠埗鍦嗙洏锛岀洏鍘?/p>
b=50
mm
銆備綅缃?/p>
I
澶勬湁涓�鐩村緞蠁
=50
inm
鐨勯�氬瓟锛屼綅缃叀澶?/p>
鏈変竴璐ㄩ噺
m
2
=0.5
kg
鐨勯噸鍧椼�備负浜嗕娇鍦嗙洏骞宠 锛屾嫙鍦ㄥ渾鐩樹笂
r=200
mm
澶勫埗涓�閫氬瓟锛岃瘯姹傛
瀛旂殑鐩村緞涓庝綅缃�?/p>
(
閽㈢殑瀵嗗害蟻
=7.8 g
锛?/p>
em
3
銆?/p>
)
瑙?/p>
鏍规嵁闈欏钩琛℃潯浠舵湁
:
m
1
r
I
+m
2
r
鈪?/p>
+m
b
r
b
=0
m
2
r
鈪?/p>
=0
.
5
脳
20=10 kg.cm
m
1
r
1
=
蟻脳
(
蟺
/4)
脳蠁
2
脳
b
脳
r
1
=7.8
脳
10
-3
脳
(
蟺
/4)
脳
5
2
脳
5
脳
l0=7.66 kg.cm
鍙栁?/p>
W
=4(kg.cm)
锛?/p>
cm
锛屼綔璐ㄥ緞绉煝閲忓杈瑰舰濡傚浘鎵�绀猴紝鎵�娣昏川閲忎负
:
m
b
=
渭
w
w
b
锛?/p>
r=4
脳
2.7
锛?/p>
20=0.54 kg
锛屛?/p>
b
=72潞锛屽彲鍦ㄧ浉鍙嶆柟鍚戞寲涓�閫氬瓟
鍏剁洿寰勪负锛?/p>