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

Rajasthan BoardEnglish MediumSTD 11 SciencePhysics4.1 , newtons laws of motion1 Mark
MCQ
A light unstretchable string passing over a smooth light pulley connects two blocks of masses $m_1$ and $m_2$. If the acceleration of the system is $\frac{g}{8}$, then the ratio of the masses $\frac{\mathrm{m}_2}{\mathrm{~m}_1}$ is:
  • ✓
    $9: 7$
  • B
    $4: 3$
  • C
    $5: 3$
  • D
    $8: 1$
✓

Answer

Correct option: A.
$9: 7$
a
$a_{5 y s}=\left(\frac{m_2-m_1}{m_1+m_2}\right) g=\frac{g}{8}$

$\Rightarrow \frac{m_2}{m_1}=\frac{9}{7}$

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