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13. oscillations — Physics STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 SciencePhysics13. oscillations1 Mark
MCQ
A mass at the end of a spring executes harmonic motion about an equilibrium position with an amplitude $A.$ Its speed as it passes through the equilibrium position is $V.$ If extended $2A$ and released, the speed of the mass passing through the equilibrium position will be
  • ✓
    $2V$
  • B
    $4V$
  • C
    $\frac{V}{2}$
  • D
    $\frac{V}{4}$
✓

Answer

Correct option: A.
$2V$
a
At equilibrium position the speed of a pendulum is equal to $A \omega$. If we double the amplitude, the speed will also double. so the correct option is $'A'$

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