Define rigid body.

Define rigidity modulus. Give the expression for rigidity modulus.

If vecR is the position vector of the centre of mass, then express the same in terms of product 'mr' of all the particles and mass M of the rigid body.

Define angular momentum of a rigid body.

Young's modulues of perfectly rigid body material is-

Write the general conditions for equilibrium of a rigid body .

Define imbibition.

Define asteroids .

Define BOD.

Define ppm.