9.如图7所示为一弹簧振子的振动图象.求 1从计时开始经过多长时间第一次达到弹性势能最大 2在第2 S末到第3 S末这段时间内弹簧 Template




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tomski9.如图7所示为一弹簧振子的振动图象.求 1从计时开始经过多长时间第一次达到弹性势能最大 2在第2 coloring