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STD 11 - 4.1. newtons laws of motion — NEET STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceNEETSTD 11 - 4.1. newtons laws of motion4 Marks
MCQ
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
    ${F_1} = 3N,\,{F_2} = 5N,\,{F_3} = 15N$
  • ✓
    ${F_1} = 3N,\,\,{F_2} = 5N,\,\,{F_3} = 6N$
✓

Answer

Correct option: D.
${F_1} = 3N,\,\,{F_2} = 5N,\,\,{F_3} = 6N$
d
(d) Range of resultant of ${F_1}$ and ${F_2}$ varies between $(3+5)=8N$ and $(5 - 3) = 2N$.

It means for some value of angle $(\theta )$, resultant $6$ can be obtained.

So, the resultant of $3\,N$, $5\,N$ and $6\,N$ may be zero and the forces may be in equilibrium.

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