Ký hiệu hai hệ lực tương đương?A. \({F_1},{F_2}, \ldots ,{F_n} \equiv {K_1},{K_2}, \ldots ,{K_n}\)B. \(\overrightarrow {{F_1}} ,\overrightarrow {{F_2}} , \ldots \overrightarrow {{F_n}} \equ

\({F_1},{F_2}, \ldots ,{F_n} \equiv {K_1},{K_2}, \ldots ,{K_n}\)

\(\overrightarrow {{F_1}} ,\overrightarrow {{F_2}} , \ldots \overrightarrow {{F_n}} \equiv \overrightarrow {{K_1}} ,\overrightarrow {{K_2}} , \ldots ,\overrightarrow {{K_n}} \)

\(\left( {\overrightarrow {{F_1}} ,\overrightarrow {{F_2}} , \ldots ,\overrightarrow {{F_n}} } \right) \equiv \left( {\overrightarrow {{K_1}} ,\overrightarrow {{K_2}} , \ldots ,\overrightarrow {{K_n}} } \right)\)

\(\left( {\overrightarrow {{F_1}} ,\overrightarrow {{F_2}} , \ldots ,\overrightarrow {{F_n}} } \right) = \left( {\overrightarrow {{K_1}} ,\overrightarrow {{K_2}} , \ldots ,\overrightarrow {{K_n}} } \right)\)