-
鏉ユ簮缃戠粶锛屼粎渚涗釜浜哄涔犲弬鑰?/p>
楂樹腑鐗╃悊寮圭哀绫婚棶棰樹笓棰樼粌涔?/p>
1.
鍥句腑
a
銆?/p>
b
涓轰袱甯︽鐢电殑灏忕悆锛屽甫鐢甸噺閮芥槸
q
锛岃川閲忓垎鍒负
M
鍜?
m
锛涚敤涓�缁濈紭寮圭哀鑱旂粨锛屽脊绨х殑鑷劧闀垮害寰堝皬锛屽彲蹇界暐涓嶈锛岃揪鍒?
骞宠 鏃讹紝寮圭哀鐨勯暱搴︿负
d
0
銆傜幇鎶婁竴鍖�寮虹數鍦轰綔鐢ㄤ簬涓ゅ皬鐞冿紝鍦哄己
鐨勬柟鍚戠敱
a
鎸囧悜
b
锛屽湪涓ゅ皬鐞冪殑鍔犻�熷害鐩哥瓑鐨勬椂鍒伙紝寮圭哀鐨勯暱搴?
涓?/p>
d
銆傦紙锛?/p>
A
锛庤嫢
M=m
锛屽垯
d=d
0
B
锛庤嫢
M
锛?/p>
m
锛屽垯
d
锛?/p>
d
0
C
锛庤嫢
M
锛?/p>
m
锛屽垯
d
锛?/p>
d
0
D
锛?/p>
d=d
0
锛屼笌
M
銆?/p>
m
鏃犲叧
2.
濡傚浘
a
鎵�绀猴紝姘村钩闈笂璐ㄩ噺鐩哥瓑鐨勪袱鏈?/p>
鍧?/p>
A
銆?/p>
B
鐢?
涓�杞诲脊绨х浉杩炴帴锛?/p>
鏁翠釜绯荤粺澶勪簬骞宠 鐘舵�?/p>
.
鐜扮敤涓�绔?
鐩村悜涓婄殑鍔?/p>
F
鎷夊姩鏈ㄥ潡
A
锛屼娇鏈ㄥ潡
A
鍚戜笂
鍋氬寑鍔犻�?/p>
鐩寸嚎杩愬姩锛?/p>
濡傚浘
b
鎵�绀?/p>
.
鐮旂┒浠庡姏
F
鍒氫綔鐢?
鍦ㄦ湪鍧?/p>
A
鐨?
鐬棿鍒版湪鍧?/p>
B
鍒氱寮�鍦伴潰鐨勭灛闂磋繖涓繃绋嬶紝骞朵笖閫夊畾杩欎釜杩囩▼涓?/p>
鏈ㄥ潡
A
鐨勮捣濮嬩綅缃负鍧愭爣鍘熺偣锛屽垯涓嬪垪鍥捐薄涓彲浠ヨ〃绀哄姏
F
鍜屾湪
鍧?/p>
A
鐨勪綅绉?/p>
x
涔嬮棿鍏崇郴鐨勬槸锛堬級
3.
濡傚浘鐢叉墍绀猴紝涓�杞诲脊绨х殑涓ょ鍒嗗埆涓庤川閲忎负
m
1
鍜?/p>
m
2
鐨勪袱鐗╁潡鐩?
杩炴帴锛?/p>
骞朵笖闈欐鍦ㄥ厜婊戠殑姘村钩闈笂
.
鐜颁娇
m
1
鐬椂鑾峰緱姘村钩鍚戝彸鐨勯�?
搴?/p>
3m/s
锛屼互姝ゅ埢涓烘椂闂撮浂鐐癸紝涓ょ墿鍧楃殑閫熷害闅忔椂闂村彉鍖栫殑瑙勫緥濡?
鍥句箼鎵�绀猴紝浠庡浘璞′俊鎭彲寰?/p>
()
A
锛庡湪
t
1
銆?/p>
t
3
鏃跺埢涓ょ墿鍧楄揪鍒板叡鍚岄�熷害
1m/s
涓斿脊绨ч兘鏄浜庡帇
缂╃姸鎬?/p>
Mm
ab
x
O
F
x
O
F
x
O
F
x
O
F
ABCD
A
B
a
A
B
b
F