PhysicsA small object of uniform density roll up a curve surface with an initial velocity v.  It reaches up to a maximum height of 3v24g with respect to the initial position. The object is

A small object of uniform density roll up a curve surface with an initial velocity v.  It reaches up to a maximum height of 3v24g with respect to the initial position. The object is

  1. A

    Ring

  2. B

    Solid sphere

  3. C

    Hollow sphere 

  4. D

    Disc

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    Solution:

    12mv2(1+K2R2)=mgh=mg3v24g

    (1+K2R2)=32

    K2R2=12

    so it is disc

     

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