System of Parti...

Two rings of radius $$R$$ and $$nR$$ made of same material have the ratio of moment of inertia about an axis passing through centre in $$1 : 8$$. The value of $$n$$ is

A wheel of mass $$10  kg$$ has a moment of inertia of $$160  kg m^2$$ about its own axis. The radius of gyration is :

Consider the following two statements A and B and identify the correct choice
A) The torques produced by two forces of couple are opposite to each other
B) The direction of torque is always perpendicular to plane of rotation of body

A particle is moving along a fixed circular orbit with uniform speed. Then the correct statement among the following is:

 A body of mass 'M' collides against a wall with a velocity 'v' and retraces its path with the same velocity, the change in momentum is

A uniform thin rod of mass $$M$$, length $$L$$ is vertically straight on a horizontal floor. If the rod is falling to a side without slipping at its bottom, the moment of inertia is:

Which of the following pairs of physical quantities are not analogous to each other in case of translatory motion and rotational motion, 

Consider the following two statements A and B and identify the correct choice.
A) The moment of inertia of a rigid body is independent of its angular velocity.
B) The radius of gyration of a rotating metallic disc is dependent on its temperature.

The centre of a mass of a rigid body lies

Can the centre of gravity be situated outside the material of the body ?