鍑犵甯歌鐨勫姏鍩逛紭
涓�锛庡脊绨ф祴鍔涜鐨勪娇鐢?/p>
1
锛庢湁涓�鏍瑰脊绨ч暱
6cm
锛屽綋鎸備笂
10N
鐨勭墿浣撴椂锛屽脊绨х殑闀垮害涓?/p>
8cm
锛岄偅涔堟寕涓?/p>
30N
鐨勭墿浣?/p>
鏃讹紙鍦ㄥ脊鎬ч檺搴﹀唴锛?/p>
锛?/p>
锛?/p>
A
锛庡脊绨т几闀夸簡
2cm
B
锛庡脊绨х殑闀夸负
18cm
C
锛庡脊绨т几闀夸簡
4cm
D
锛庡脊绨х殑闀夸负
12cm
2
锛庡鍥炬墍绀猴紝鍚勭墿浣撻噸鍧囦负
G=5N
锛屽潎澶勪簬闈欐鐘舵�侊紝寮圭哀娴嬪姏璁″拰缁嗙嚎鐨勯噸鍔涗笉璁★紝涓?/p>
涓�鍒囨懇鎿︿笉璁★紝鍒欏脊绨ф祴鍔涜
A
鍜?/p>
B
鐨勮鏁板垎鍒负锛?/p>
锛?/p>
A
锛?/p>
5N
10N
B
锛?/p>
5N
0
C
锛?/p>
5N
5N
D
锛?/p>
0
0
3
锛庡鍥炬墍绀猴紝鐗╀綋鐢插拰涔欓�氳繃缁嗙怀涓庡脊绨ф祴鍔涜杩炴帴鍦ㄤ竴璧枫�傜敳閲?/p>
10N
鏀惧湪鍦伴潰涓婏紱涔欓噸
5N
琚悐鍦ㄧ┖涓紝瀹冧滑鍧囦繚鎸侀潤姝€�傝嫢涓嶈寮圭哀鍙婄粏缁崇殑閲嶉噺锛屼篃涓?/p>
璁＄粏缁充笌婊戣疆鐨勬懇鎿﹀姏銆備笅鍒楀彊杩版纭殑鏄紙
锛?/p>
A
锛庡脊绨ф祴鍔涜鐨勭ず鏁颁负
10N
B
锛庝箼鐗╀綋鍙楀埌鐨勯噸鍔涗笌缁嗙怀瀵瑰畠鐨勬媺鍔涙槸浣滅敤鍔涘拰鍙嶄綔鐢ㄥ姏
C
锛庡湴闈㈠鐢茬墿浣撶殑鏀寔鍔涗负
5N
D
锛庡湴闈㈠鐢茬殑鏀寔鍔涘拰鐢插鍦伴潰鐨勫帇鍔涙槸涓�瀵瑰钩琛″姏
4
锛庡鍥炬墍绀猴紝
a
銆?/p>
b
涓や釜寮圭哀娴嬪姏璁℃斁鍦ㄦ按骞虫闈笂骞剁浉浜掗挬鍦ㄤ竴璧凤紝鐢ㄦ按骞虫媺鍔?/p>
F
1
鍜?/p>
F
2
鍒嗗埆鎷?/p>
a
銆?/p>
b
鐨勭Г鐜紝
F
1
=F
2
=4N
锛屼袱寮圭哀娴嬪姏璁￠潤姝€�傚垯涓嬪垪鍒嗘瀽姝ｇ‘鐨勬槸锛?/p>
锛?/p>
