Question

What is the center of mass of an object?

• A. The mean position of the mass in an object.
• B. The geometric center of an object.
• C. The furthest away position of the mass in an object.
• D. The same as the center of gravity.
• E. The closest position of the mass in an object.

Answer 1

The correct option is A The mean position of the mass in an object.

The mass of the body is scattered equally in all space around the centre of mass. It is closer to the heavier regions of the object and hence need not be at the geometric centre.

Options C and E don't make sense.

It doesn't coincide with the centre of gravity for very large bodies like mountains.