作者ntnuguru (京风~~追梦京华)
看板Physics
标题[题目] 一题关於合力的问题
时间Wed Aug 26 20:01:10 2009
[领域] 高中物理
[来源] 课本习题
[题目]
A baby elephant is stuck in a mud hole. To help pull it out, game keepers use
a rope to apply force Fa, as part of the drawing shows. By itself, however,
force Fa is insufficient. Therefore, two additional forces Fb and Fc are
applied, as in part of the drawing. Each of these additional forces has the
same magnitude F and is oriented at θ = 19.5° away from Fa . The magnitude
of the resultant fo
[瓶颈]
请问答案是不是2fcos19.5°+f 因为不确定fa是否也为F所以请大家帮个忙
谢谢
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◆ From: 140.122.174.158
1F：→ accacaccac:现在高中物理课本改英文了阿? 08/27 03:20
2F：→ chungweitw:图哩? 08/27 07:49
3F：→ ntnuguru:不好意思 因为是美国学校所以用英文课本@@ 08/27 08:10
5F：→ chungweitw:2Fcos19.5 + F_A. 老实说, 你题目一定没写完 08/27 08:46
6F：→ ntnuguru:我也疑惑题目是不是有漏@@但题目确实是这样感谢上面大大 08/27 12:08
7F：→ chungweitw:不是啊. 你最後一句话明显没结束. 08/27 12:48
8F：→ chungweitw:fo -> force 吧. 08/27 12:49
9F：→ chungweitw:之後应该会接 in part(b) is ....之类的吧. 08/27 12:50