Duduli

Answer: The moments of inertia of certain bodies of a regular geometrical shape about any one of their three perpendicular axes of symmetry, passing through their centres of mass may, however, be directly obtained by directly obtained by the application of what is known as Routh's rule.

Answer:- Moment of inertia of a body, about a given axis, is defined as the property of body by virtue of which it is unable to change its uniform rotational motion without the help of an external torque.

Answer:- Radius of gyration of a body about an axis is that distance, at which  if whole of the mass of the body were concentrated, it would have same moment of inertia as that of body.[I=MK²].   Where,K= Radius of gyration or effective distance or the radius of the centre of mass of that body.                        

Answer:- If in a very small time interval their is a large torque applied on a body then the change in angular momentum of that body is known as angular impulse.(Vector quantity) As,

Answer:- A rigid body is said to be in equilibrium if   it do not change its state of rest or  uniform motion (linear or rotational) with respect to time. ★If ,    F(external)=0 it implies translatory equilibrium. ★If,      Torque (external)=0 it implies rotatory equilibrium.

Answer:- A rigid body is defined as a solid body in which the particles are compactly arranged so that the inter-particle distance is small and fixed and is not disturbed by any external forces applied.

Answer:- A point where the whole of the weight of a  body is supposed to be acting, is  called centre of gravity. Centre of gravity & centre of mass may be coincident.

Answer:- Centre of a mass of a body is defined as a single point where whole of the mass of the body is supposed to be concentrated and which behaves in similar manner to external forces as the body would have behaved.It may lie outside the body.

Answer:- A rigid body consists of a number of particles confined to a fixed geometrical shape and size in such a way that the distance between any pair of particles always remains constant.

Answer:- Angular velocity is the angle described by a rotating body per unit time.It is a vector quantity. And is denoted by w(omega)