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NEET 2010
Exam
NEET
Year
2010
Subject
Physics
Chapter
Oscillations

NEET 2010 · Physics · Oscillations

The period of oscillation of a mass M suspended from a spring of...

The period of oscillation of a mass MM suspended from a spring of negligible mass is T\mathrm{T}. If along with it another mass MM is also suspended, the period of oscillation will now be

Options

  1. AT\mathrm{T}
  2. BT/2\mathrm{T} / \sqrt{2}
  3. C2 T2 \mathrm{~T}
  4. D2 T\sqrt{2} \mathrm{~T}

Correct answer

D. 2 T\sqrt{2} \mathrm{~T}

Step-by-step solution

Time period of spring pendulum, T=2πMkT=2 \pi \sqrt{\frac{M}{k}}. If now mass in doubled T′=2π2Mk=2 T\mathrm{T}^{\prime}=2 \pi \sqrt{\frac{2 \mathrm{M}}{\mathrm{k}}}=\sqrt{2} \mathrm{~T}
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