Question

select WRONG statement about centre of mass
A)Centre of mass of a 'C'shaped
rod can never be a point on that
(B) If the line of action of a force
through the centre of mass, the m
of that force is zero.
(C) Centre of mass of our Earth is not
geometrical centre.
(D) While balancing an object on a pivot
the line of action of the gravitational
force of the earth passes through the
centre of mass of the object.​

Answer 1

the wrong statement about the centre of mass is that if the line of action of a force to the centre of the mass the mass of the force is zero.

Option b

Explanation:

• centre of mass is a concept in physics in which all the mass of the particles constituting a particular body is concentrated.

• This means that the mass of an extended body x through the centre of mass of that object. Hence it is useful for balancing the substance. From the centre of mass the mass is distributed equally on all four sides in a three dimensional figure

To know more,

Explain Centre of mass .​ - Brainly.in

https://brainly.in/question/12259782

Answer 2

Answer

(D)

Explanation:

It passes through centre of gravity not specifically centre mass. Centre of mass and centre of gravity differ while dealing with massive objects scaling sizes such that gravitational acceleration(g) on it differs with increasing height. Therefore, force(mg) has different moment thus centre on the body.

Correction

The above is if you have not typed the option (B) correctly. The 'm' refers to mass, while it is meant to be moment. If it is m only even that option is wrong.