璇炬椂浣滀笟
9
鐗涢】杩愬姩瀹氬緥鐨勭患鍚堝簲鐢?/p>
鏃堕棿锛?/p>
45
鍒嗛挓
1
锛庝袱涓川閲忓垎鍒负
m
1
銆?/p>
m
2
鐨勭墿浣?/p>
A
鍜?/p>
B
绱ч潬鍦ㄤ竴璧锋斁鍦ㄥ厜婊戞按骞虫闈笂锛屽鍥炬墍绀猴紝
濡傛灉瀹冧滑鍒嗗埆鍙楀埌姘村钩鎺ㄥ姏
2
F
鍜?/p>
F
锛屽垯
A
銆?/p>
B
涔嬮棿寮瑰姏鐨勫ぇ灏忎负
(
C
)
A.
m
2
m
1
锛?/p>
m
2
F
B.
m
1
m
1
锛?/p>
m
2
F
C.
m
1
锛?/p>
2
m
2
m
1
锛?/p>
m
2
F
D.
2
m
1
锛?/p>
m
2
m
1
锛?/p>
m
2
F
瑙ｆ瀽锛?/p>
鏍规嵁鐗涢】绗簩瀹氬緥瀵规暣浣撴湁锛?/p>
2
F
锛?/p>
F
锛?/p>
(
m
1
锛?/p>
m
2
)
a
锛屾柟鍚戞按骞冲悜鍙筹紱瀵圭墿浣?/p>
B
鏈夛細
F
N
锛?/p>
F
锛?/p>
m
2
a
锛岃仈绔嬩笂杩颁袱寮忓緱锛?/p>
F
N
锛?/p>
m
1
锛?/p>
2
m
2
m
1
锛?/p>
m
2
F
锛屾晠閫夐」
A
銆?/p>
B
銆?/p>
D
鍧囬敊璇紝閫夐」
C
姝ｇ‘锛?/p>
2
锛庡鍥炬墍绀猴紝鐗╀綋
A
鐨勮川閲忎负
0.2
kg
锛岀墿浣?/p>
B
鐨勮川閲忎负
0.6
kg
锛屼袱鐗╀綋鍒嗗埆鐢辫交璐ㄧ粏
缁冲強杞昏川寮圭哀閫氳繃鍏夋粦瀹氭粦杞浉杩烇紝寮圭哀鐨勫姴搴︾郴鏁?/p>
k
锛?/p>
100 N/m
锛屽紑濮嬫椂涓ょ墿浣撳湪澶栧姏浣?/p>
鐢ㄤ笅澶勪簬闈欐鐘舵�佷笖缁嗙怀鍒氬ソ浼哥洿锛庣幇鍚屾椂閲婃斁
A
銆?/p>
B
锛屽垯绋冲畾鍚?/p>
(
涓ょ墿浣撳潎鍦ㄧ┖涓繍鍔?/p>
)
锛?/p>
閲嶅姏鍔犻�熷害
g
鍙?/p>
10 m/s
2
锛屼笅鍒楄娉曟纭殑鏄?/p>
(
B
)
A
锛庡脊绨х殑浼搁暱閲忎负
6 cm
B
锛庡脊绨х殑浼搁暱閲忎负
3 cm
C
锛庣墿浣?/p>
A
澶勪簬澶遍噸鐘舵�?/p>
D
锛庣墿浣?/p>
B
澶勪簬瓒呴噸鐘舵�?/p>
瑙ｆ瀽锛?/p>
璁剧ǔ瀹氬悗缁嗙怀鎷夊姏澶у皬涓?/p>
T
锛屼袱鐗╀綋杩愬姩鐨勫姞閫熷害澶у皬涓?/p>
a
锛屽垯鐢辩墰椤跨浜屽畾寰?/p>
鐭?/p>
T
锛?/p>
G
A
锛?/p>
m
A
a
锛?/p>
G
B
锛?/p>
T
锛?/p>
m
B
a
锛岃仈绔嬪苟浠ｅ叆鏁板�煎緱
T
锛?/p>
3 N
锛?/p>
a
锛?/p>
5 m/s
2
锛岀敱鑳″厠瀹氬緥鐭?/p>
T
锛?/p>
kx
锛?/p>
浠ｅ叆鏁板�煎緱寮圭哀鐨勪几闀块噺涓?/p>
3
cm
锛?/p>
A
閿欒锛?/p>
B
姝ｇ‘锛涚墿浣?/p>
A
鐨勫姞閫熷害绔栫洿鍚戜笂锛屽浜庤秴閲嶇姸
鎬侊紝鐗╀綋
B
鐨勫姞閫熷害绔栫洿鍚戜笅锛屽浜庡け閲嶇姸鎬侊紝
C
銆?/p>
D
閿欒锛?/p>
3
锛庡鍥炬墍绀猴紝濂楀湪姘村钩鐩存潌涓婅川閲忎负
m
鐨勫皬鐞冨紑濮嬫椂闈欐锛岀幇瀵瑰皬鐞冩部鏉嗘柟鍚戞柦鍔犳亽
鍔?/p>
F
0
锛?/p>
鍨傜洿浜庢潌鏂瑰悜鏂藉姞绔栫洿鍚戜笂鐨勫姏
F
锛?/p>
涓?/p>
F
鐨勫ぇ灏忓缁堜笌灏忕悆鐨勯�熷害鎴愭姣旓紝
鍗?/p>
F
锛?/p>
kv
(
鍥?/p>
涓湭鏍囧嚭
)
锛?/p>
宸茬煡灏忕悆涓庢潌闂寸殑鍔ㄦ懇鎿﹀洜鏁颁负
渭
锛?/p>
灏忕悆杩愬姩杩囩▼涓湭浠庢潌涓婅劚钀斤紝
涓?/p>
F
0
>
渭
mg
.