2 solid spheres of each  radius r are kept in contact moment of inertia of d system about a tangent passing thru d point of contact is  [ans 14/5mr^2]

 

  a block of mass 2kg hangs frm d rim of a wheel of radius 0.5m on releasing  frm rest d block falls thru 5m height in 2s d moment of inertia of d wheel will be

 

   a a disc of massM & radius R rolls on a horizontal surface & den rolls  up an inclined plane if d velocity of d disc is ' v ' d height to which d disc will rise  will be [ ans 3v^2/4g]

 

 a circular  disc of radius R & thickness R/6 has moment of inertia I about an axis passing thru  its centre &  to its axis of d cylinder when its length is 6 times its radius R is [ans 49 MR^2   /4