Which of the following sets of concurrent forces may be in equilibrium

  • A

    ${F_1} = 3N,\,\,{F_2} = 5N,\,\,{F_3} = 9N$

  • B

    ${F_1} = 3N,\,\,{F_2} = 5N,\,\,{F_3} = 1N$

  • C

    ${F_1} = 3N,\,{F_2} = 5N,\,{F_3} = 15N$

  • D

    ${F_1} = 3N,\,\,{F_2} = 5N,\,\,{F_3} = 6N$

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