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4.1 , newtons laws of motion — Physics STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 SciencePhysics4.1 , newtons laws of motion1 Mark
MCQ
Three force $F_1=10\,N , F_2=8\,N , F _3=6\,N$ are acting on a particle of mass $5\,kg$. The forces $F _2$ and $F _3$ are applied perpendicular so that particle remains at rest. If the force $F_1$ is removed, then the acceleration of the particle is $......ms^{-2}$
  • ✓
    $2$
  • B
    $0.5$
  • C
    $4.8$
  • D
    $7$
✓

Answer

Correct option: A.
$2$
a
Resultant of $\overrightarrow{ F _2}$ and $\overrightarrow{ F _3}$ should be opposite to $\overrightarrow{ F _1}$

$a=\frac{10}{5}=2\,m / s ^2$

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