In the situation as shown in figure time period of vertical oscillation of block for small displacements will be 

819-461

  • A

    $2\pi \cos \theta \sqrt {\frac{m}{{2k}}} $

  • B

    $2\pi \sec \theta \sqrt {\frac{m}{{2k}}} $

  • C

    $2\pi \sin \theta \sqrt {\frac{m}{{2k}}} $

  • D

    $2\pi \cos ec\theta \sqrt {\frac{m}{{2k}}} $

Similar Questions

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A particle of mass $m$ is attached to one end of a mass-less spring of force constant $k$, lying on a frictionless horizontal plane. The other end of the spring is fixed. The particle starts moving horizontally from its equilibrium position at time $t=0$ with an initial velocity $u_0$. When the speed of the particle is $0.5 u_0$, it collies elastically with a rigid wall. After this collision :

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  • [IIT 2013]

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