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Rotational Motion question

2022 · 27 Jun · Shift 2 · Q48
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  5. /2022 · 27 Jun · Shift 2 · Q48

Rotational Motion question

2022 · 27 Jun · Shift 2 · Q48

JEE MainPhysicsRotational MotionMCQ+4 / −1
One end of a massless spring of spring constant k and natural length l0 is fixed while the other end is connected to a small object of mass m lying on a frictionless table. The spring remains horizontal on the table. If the object is made to rotate at an angular velocity ω\omegaω about an axis passing through fixed end, then the elongation of the spring will be :
  1. A
    k−mω2l0mω2{{k - m{\omega ^2}{l_0}} \over {m{\omega ^2}}}mω2k−mω2l0​​
  2. B
    mω2l0k+mω2{{m{\omega ^2}{l_0}} \over {k + m{\omega ^2}}}k+mω2mω2l0​​
  3. C
    mω2l0k−mω2{{m{\omega ^2}{l_0}} \over {k - m{\omega ^2}}}k−mω2mω2l0​​
  4. D
    k+mω2l0mω2{{k + m{\omega ^2}{l_0}} \over {m{\omega ^2}}}mω2k+mω2l0​​
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