[題目] 一題關於合力的問題
[領域] 高中物理
[來源] 課本習題
[題目]
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
[瓶頸]
請問答案是不是2fcos19.5°+f 因為不確定fa是否也為F所以請大家幫個忙
謝謝
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