绗?/p>
1
椤碉紙鍏?/p>
102
椤碉級
楂樿�冪墿鐞嗗姏瀛﹁绠楅锛堝洓锛?/p>
缁勫嵎鑰佸笀锛氳帿鑰佸笀
璇勫嵎浜?/p>
寰?/p>
鍒?/p>
涓�锛庤绠楅锛堝叡
50
灏忛锛?/p>
1
锛?/p>
濡傚浘鎵�绀猴紝
AB
涓烘按骞宠建閬擄紝
绔栫洿骞抽潰鍐呯殑鍗婂渾杞ㄩ亾
BCD
鐨勪笅绔笌姘村钩杞ㄩ亾鐩?/p>
鍒囦笌
B
鐐癸紟璐ㄩ噺
m=0.50kg
婊戝潡锛堝彲瑙嗕负璐ㄧ偣锛?/p>
锛屼粠
A
鐐逛互閫熷害
v
A
=10m/s
娌挎按骞?/p>
杞ㄩ亾鍚戝彸杩愬姩锛?/p>
鎭板ソ鑳介�氳繃鍗婂渾杞ㄩ亾鐨勪笂绔?/p>
D
鐐癸紝
宸茬煡
AB
闀?/p>
x=3.5m
锛?/p>
婊戝潡涓庢按
骞宠建閬撻棿鐨勫姩鎽╂摝鍥犳暟
渭=0.10
锛屽崐鍦嗚建閬撶殑鍗婂緞
R=0.50m
锛?/p>
g=10m/s
2
锛屾眰锛?/p>
锛?/p>
1
锛夋粦鍧楀垰鍒氭粦涓婂崐鍦嗚建閬撴椂锛屽鍗婂渾杞ㄩ亾涓嬬
B
鐐圭殑鍘嬪姏澶у皬锛?/p>
锛?/p>
2
锛夋粦鍧椾粠
B
鐐硅繍鍔ㄥ埌
D
鐐圭殑杩囩▼涓厠鏈嶆懇鎿﹀姏鎵�鍋氱殑鍔燂紟
2
锛庝竴鐗╁潡鍦ㄤ竴涓按骞虫媺鍔涗綔鐢ㄤ笅娌跨矖绯欐按骞抽潰杩愬姩锛屽叾
v
锕?/p>
t
鍥捐薄濡傚浘鐢叉墍绀猴紝
姘村钩鎷夊姏鐨?/p>
P
锕?/p>
t
鍥捐薄濡傚浘涔欐墍绀猴紝
g=10m/s
2
锛屾眰锛?/p>
锛?/p>
1
锛夌墿鍧椾笌姘村钩闈㈤棿鐨勫姩鎽╂摝鍥犳暟
渭
锛?/p>
锛?/p>
2
锛夌墿鍧楄繍鍔ㄥ叏杩囩▼姘村钩鎷夊姏鎵�鍋氱殑鍔?/p>
W
锛?/p>
锛?/p>
3
锛夌墿鍧楀湪
0
锝?/p>
2s
鍐呮墍鍙楃殑姘村钩鎷夊姏澶у皬
F
锛?/p>
3
锛庡鍥炬墍绀猴紝鍏夋粦鐩存潌
AB
闀夸负
L
锛?/p>
B
绔浐瀹氫竴鏍瑰姴搴︾郴鏁颁负
k
銆佸師闀夸负
l
0
鐨勮交
寮圭哀锛?/p>
璐ㄩ噺涓?/p>
m
鐨勫皬鐞冨鍦ㄥ厜婊戠洿鏉嗕笂骞朵笌寮圭哀鐨勪笂绔繛鎺ャ�?/p>
OO'
涓鸿繃
B
鐐圭殑绔?