Define: Centre of mass

Define Centre of gravity:

Define write the laws: Centre of mass

Choose the correct options Centre of mass of body lies

Four bodies of equal mass start moving with same speed as shown in the figure. In which of the following combination the centre of mass will remain at origin ?

Assertion : The centre of mass of a body may lie where there is no mass. Reason : The centre of mass has nothing to do with the mass.

What is the concept of centre of mass ?

Where is the centre of mass located for an object ?

Find the expression for the acceleration of centre of mass.

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.

How can the centre of mass be mathematically determined or understood?