Where is the centre of mass located for an object ?

The centre of mass of a body

Define centre of mass.

Where does the centre of mass of a uniform rectangular lamina lie ?

Define: Centre of mass

Why do we need to know the centre of mass of an object? For which objeects, its position may differ from that of the centre of gravity?

……..is the product of mass and velocity of an object

Where will be the centre of mass on combining two masses m and M(M gt m) ?

Choose the correct options Select WRONG statement about centre of mass: A. Centre of mass of a 'C' shaped uniform rod can never be a point on that rod. B. If the line of action of a force passes through the centre of mass, the moment of that force is zero. C. Centre of mass of our Earth is not at its geometrical centre. D. While balancing an object on pivot, the line of action of the gravitational force of the earth passes through the centre of mass of the object.

The centre of mass of a system of three particles of masses 1 g, 2 g and 3 g is taken as the origin of a coordinate system. The position vector of a fourth particle of mass 4 g such that the centre of mass of the four particle system lies at the point (1, 2, 3) is alpha(hati+2hatj+3hatk) , where alpha is a constant. The value of alpha is

What is the concept of centre of mass ?