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Vector Algebra — Maths STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceMathsVector Algebra1 Mark
MCQ
Four forces act on a point object. The object will be in equilibrium, if:
  • A
    All of them are in the same plane
  • B
    They are opposite to each other in pairs
  • C
    The sum of $x, y$ and $z-$components of forces zero separately
  • ✓
    They form a closed figure of $4$ sides when added as Polygon law
✓

Answer

Correct option: D.
They form a closed figure of $4$ sides when added as Polygon law
The equilibrium condition is obtained when the net force acting on the body is zero.
and a closed polygon of $4$ sides will give the resultant force as zero and forcing acting will be in the same plane.

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