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Worksheet-2


                                                      Sub-topic-MI



                 1   MI depends on
                     a. axis of rotation
                     b. torque applied
                     c. angular speed
                     d. Angular momentum
                 2   MI  of an object does not depends on
                     a. mass of the object
                     b. mass distribution
                     c. angular speed
                     d. axis of rotation


                 3   What is the ratio of moment of inertia of two rings of radii r and nr about an axis perpendicular to
                     their plane and passing through their centers?
                          2
                     a.  1:n
                     b.  1:n
                     c.  1:2n
                         2
                     d.  n :1

                 4   Two rings of radii  R and nR make from same wire have the ratio MI about an axis passing through
                     their centers equal to 1:8.The value of n is
                     a.  2
                     b.  4
                     c.  3
                     d.  9

                 5   Two identical concentric rings each of mass m and radius R are placed perpendicularly. what is the
                     MI axis of one of the ring?
                              2
                     a. 1/2 MR
                           2
                     b.  MR
                               2
                     c.  1/3  MR
                            2
                     d.  2 MR

                 6   A diver in a swimming pool bends his head before diving. It
                     a.  increases his linear speed
                     b.  decreases his angular velocity
                     c.  increases his MI
                     d.  decreases his MI

                 7   Define MI in terms of rotational KE..
                 8   What is radius of Gyration? Write its SI unit and Dimensional formula.
                 9   Write two factors on which MI of an object depends on.
                10   About which axis of a disc is its moment of inertia the least?
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