澶у鐗╃悊
1
鏈熸湯鑰冭瘯澶嶄範锛岃瘯鍗峰師棰樹笌绛旀
鍔涘
8.
B
m
A
C
飦憋�?
璐ㄩ噺涓?/p>
m
鐨勫皬鐞冿紝鐢ㄨ交缁?/p>
AB
銆?/p>
BC
杩炴帴锛屽鍥撅紝鍏朵腑
AB
姘村钩锛庡壀鏂怀
AB
鍓嶅悗鐨勭灛闂达紝缁?/p>
BC
涓殑寮犲姏姣?/p>
T
:
T
鈥诧紳
____________________
锛?/p>
9.
飦憋�?
l
m
涓�鍦嗛敟鎽嗘憜闀夸负
l
銆佹憜閿よ川閲忎负
m
锛屽湪姘村钩闈笂浣滃寑閫熷渾鍛ㄨ繍鍔紝鎽嗙嚎涓庨搮
鐩寸嚎澶硅
飦?/p>
锛屽垯
(1)
鎽嗙嚎鐨勫紶鍔?/p>
T
锛?/p>
_____________________
锛?/p>
(2)
鎽嗛敜鐨勯�熺巼
v
锛?/p>
_____________________
锛?/p>
12.
蠅
P
C
O
涓�鍏夋粦鐨勫唴琛ㄩ潰鍗婂緞涓?/p>
10 cm
鐨勫崐鐞冨舰纰楋紝浠ュ寑瑙掗�熷害
飦?/p>
缁曞叾瀵圭О
OC
鏃嬭浆锛庡凡鐭ユ斁鍦ㄧ鍐呰〃闈笂鐨勪竴涓皬鐞?/p>
P
鐩稿浜庣闈欐锛屽叾浣嶇疆楂樹簬纰楀簳
4
cm
锛屽垯鐢辨鍙帹鐭ョ鏃嬭浆鐨勮閫熷害绾︿负
(A) 10 rad/s
锛?/p>
(B) 13 rad/s
锛?/p>