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Simple Harmonic Motion question

2019 · 12 Jan · Shift 1 · Q70
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Simple Harmonic Motion question

2019 · 12 Jan · Shift 1 · Q70

JEE MainPhysicsSimple Harmonic MotionMCQ+4 / −1
Two light identical springs of spring constant k are attached horizontally at the two ends of a uniform horizontal rod AB of length ℓ\ellℓ and mass m. The rod is pivoted at its centre 'O' and can rotate freely in horizontal plane. The other ends of the two springs are fixed to rigid supports as shown in figure. The rod is gently pushed through a small angle and released. The frequency of resulting oscillation is : JEE Main 2019 (Online) 12th January Morning Slot Physics - Simple Harmonic Motion Question 113 English
  1. A
    12π3km{1 \over {2\pi }}\sqrt {{{3k} \over m}}2π1​m3k​​
  2. B
    12π6km{1 \over {2\pi }}\sqrt {{{6k} \over m}}2π1​m6k​​
  3. C
    12πkm{1 \over {2\pi }}\sqrt {{k \over m}}2π1​mk​​
  4. D
    12π2km{1 \over {2\pi }}\sqrt {{{2k} \over m}}2π1​m2k​​
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