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本帖最后由 zerowing 于 2016-5-6 14:35 编辑8 O' M! `1 S) @9 e6 I. _8 E
2 i3 n* i! W& ~* rsinθ=y0/60t+sin(60° )-0.5*g/60% s, N: W" I+ X cosθ=x0/60t +cos(60° ) . p, [ j9 C# @ - l0 d: g# n" I' i6 ]y0=60*0.5*sin(60° )-g/8 ( R \+ H0 ^3 |' Y. Ax0=60*0.5*cos(60° ) ! L$ B8 Z: p; x6 t 5 ^8 R9 {0 ~, E$ }/ p2 u9 ]8 V$ \8 G 7 f6 ?4 W% c9 y* [. t, e4 \联立解θ,t,然后可解X,Y9 ~6 u& J6 E& V% Z/ b& H
9 U: N- c5 w }: `- W3 C# } |% n& J, r 最终结果取决于g=?5 P u& y8 f: p/ g 5 ^% E4 ~& B+ M+ b* |! ?" G 4 J3 Z6 a9 _/ { g=10 θ=57.52°, t=6.6762 B9 M9 y. \4 x) x+ r g=9.8 θ=57.58°, t=6.908 1 y7 l! R2 e$ s: n4 L' _; c 5 N' }4 k; ?- [& ~8 v$ @ , S# T' Q$ a3 u* j2 }XY值不算了。- z4 Z+ t; F' f# s- U m
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