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13. oscillations — Physics STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 SciencePhysics13. oscillations1 Mark
MCQ
When a mass $M$ is attached to the spring of force constant $k$, then the spring stretches by $l$. If the mass oscillates with amplitude $l$, what will be maximum potential energy stored in the spring
  • A
    $\frac{{kl}}{2}$
  • B
    $2kl$
  • ✓
    $\frac{1}{2}Mgl$
  • D
    $Mgl$
✓

Answer

Correct option: C.
$\frac{1}{2}Mgl$
c
(c) $Mg = Kl$

==> ${U_{\max }} = \frac{1}{2}K{l^2} = \frac{1}{2}mgl$

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