鍔涗笌鐗╀綋鐨勫钩琛?/p>
涓�銆佸崟椤归�夋嫨棰?/p>
1
锛庡湪绮楃硻姘村钩闈笂鏀剧潃涓�涓笁瑙掑舰鏈ㄥ潡
abc
锛屽湪瀹冪殑涓や釜绮楃硻鏂滈潰涓婂垎鍒斁鏈夎川閲忎负
m
1
鍜?/p>
m
2
鐨勪袱涓墿浣擄紝
m
1
>
m
2
锛屽鍥炬墍绀猴紝鑻ヤ笁瑙掑舰鏈ㄥ潡鍜屼袱鐗╀綋閮芥槸闈欐鐨勶紝鍒欑矖绯欐按骞抽潰瀵逛笁
瑙掑舰鏈ㄥ潡
(
)
A
锛庢湁鎽╂摝鍔涚殑浣滅敤锛屾懇鎿﹀姏鐨勬柟鍚戞按骞冲悜鍙?/p>
B
锛庢湁鎽╂摝鍔涚殑浣滅敤锛屾懇鎿﹀姏鐨勬柟鍚戞按骞冲悜宸?/p>
C
锛庢湁鎽╂摝鍔涚殑浣滅敤锛屼絾鎽╂摝鍔涚殑鏂瑰悜涓嶈兘纭畾锛屽洜
m
1
銆?/p>
m
2
銆?/p>
胃
1
銆?/p>
胃
2
鐨勬暟鍊煎潎鏈粰鍑?/p>
D
锛庝互涓婄粨璁洪兘涓嶅
瑙ｆ瀽锛氶�?/p>
D.
娉曚竴
(
闅旂娉?/p>
)
锛氭妸涓夎褰㈡湪鍧楅殧绂诲嚭鏉ワ紝瀹冪殑涓や釜鏂滈潰涓婂垎鍒彈鍒颁袱鐗╀綋瀵?/p>
瀹冪殑鍘嬪姏
F
N1
銆?/p>
F
N2
锛屾懇鎿﹀姏
F
1
銆?/p>
F
2
.
鐢变袱鐗╀綋鐨勫钩琛℃潯浠剁煡锛岃繖鍥涗釜鍔涚殑澶у皬鍒嗗埆涓?/p>
F
N1
锛?/p>
m
1
g
cos
胃
1
锛?/p>
F
N2
锛?/p>
m
2
g
cos
胃
2
F
1
锛?/p>
m
1
g
sin
胃
1
锛?/p>
F
2
锛?/p>
m
2
g
sin
胃
2
瀹冧滑鐨勬按骞冲垎鍔涚殑澶у皬
(
濡傚浘鎵�绀?/p>
)
鍒嗗埆涓?/p>
F
N1
x
锛?/p>
F
N1
sin
胃
1
锛?/p>
m
1
g
cos
胃
1
sin
胃
1
F
N2
x
锛?/p>
F
N2
sin
胃
2
锛?/p>
m
2
g
cos
胃
2
sin
胃
2
F
1
x
锛?/p>
F
1
cos
胃
1
锛?/p>
m
1
g
cos
胃
1
sin
胃
1
F
2
x
锛?/p>
F
2
cos
胃
2
锛?/p>
m
2
g
cos
胃
2
sin
胃
2
鍏朵腑
F
N1
x
锛?/p>
F
1
x
锛?/p>
F
N2
x
锛?/p>
F
2
x
锛屽嵆瀹冧滑鐨勬按骞冲垎鍔涗簰鐩稿钩琛★紝鏈ㄥ潡鍦ㄦ按骞虫柟鍚戞棤婊戝姩瓒嬪娍锛屽洜
姝や笉鍙楁按骞抽潰鐨勬懇鎿﹀姏浣滅敤锛?/p>
娉曚簩
(
鏁翠綋娉?/p>
)
锛?/p>
鐢变簬涓夎褰㈡湪鍧楀拰鏂滈潰涓婄殑涓ょ墿浣撻兘闈欐锛?/p>
鍙互鎶婂畠浠湅鎴愪竴涓暣浣擄紝
鍙楀姏濡傚浘鎵�绀猴紟
璁?/p>
涓夎褰㈡湪鍧楄川閲忎负
M
锛屽垯绔栫洿鏂瑰悜鍙楀埌閲嶅姏
(
m
1
锛?/p>
m
2
锛?/p>
M
)
g
鍜屾敮鎸佸姏
F
N
浣滅敤澶勪簬骞宠 鐘舵�侊紝姘?/p>
骞虫柟鍚戞棤浠讳綍婊戝姩瓒?/p>
鍔匡紝鍥犳涓嶅彈姘村钩闈㈢殑鎽╂摝鍔涗綔鐢紟
2
锛?2019路楂樿�冨叏鍥藉嵎鈪?鐗╁潡鍦ㄨ交缁崇殑鎷夊姩涓嬫部鍊捐涓?/p>
30
掳鐨勫浐瀹氭枩闈㈠悜涓婂寑閫熻繍鍔紝
杞荤怀涓庢枩闈㈠钩琛岋紟宸茬煡鐗╁潡涓庢枩闈箣闂寸殑鍔ㄦ懇鎿﹀洜鏁颁负
3
3
锛岄噸鍔涘姞閫熷害鍙?/p>
10 m/s
2
.
鑻ヨ交缁宠兘
鎵垮彈鐨勬渶澶у紶鍔涗负
1 500 N
锛屽垯鐗╁潡鐨勮川閲忔渶澶т负
(
)
A
锛?/p>
150 kg
B
锛?/p>
100
3 kg