Question

Centre of gravity is usually located where
A. less mass is concentrated
B. less weight is concentrated
C. more mass in concentrated
D. more weight is concentrated

Answer 1

Hint: A point inside the body from which the weight of the body or system may be considered to act is called the Centre of gravity of a body. In case of uniform gravity it is the same point as the center of mass of the body. For convenience in mathematical calculations, center of gravity is considered while applying the gravitational force on the body.

Complete step by step answer:
Centre of gravity is an imaginary point in a body of matter where the total weight of the body may be assumed to be concentrated. The definition of center of gravity of a body is the point or the place in a system or body at which the weight is evenly dispersed and all sides are in balance. We can use this point, center of gravity, for the convenience in certain calculations.

Centre of gravity of an object is a specific point such that the body behaves as if the entire force due to gravity is acting only at that one particular point. As we know, weight means the force of gravity acting on a particular body; therefore, the center of gravity will be located at the place where more weight of the body is concentrated. The location of a body’s center of gravity may coincide with the geometric center of the body, in situations like a symmetrically shaped object composed of homogeneous material.
Centre of gravity is usually located where more weight is concentrated.

Hence, the correct option is D.

Note:
Students should not get confused between the center of gravity and the center of mass of a body. The center of gravity of a body is a specific point such that the body behaves as if the entire gravitational force is acting only at that point. The center of mass of a body is defined as the position relative to an object or system of objects which is the average position of all the parts of the system, weighted according to their masses. In case of uniform gravity, that is a symmetrically shaped body, center of gravity coincides with the center of mass of the body.
As the center of gravity is associated with the gravitational force and the gravitational force on a body is associated with its weight; thus, we consider the center of gravity at the place where more weight is located and not the mass.