Final answer:
The point at which a density curve would balance if made of solid material is called the center of mass. In physics, the center of mass is the point where the object will stay balanced even if only supported at this point.
Step-by-step explanation:
The point at which a density curve would balance if made of solid material is called the center of mass.
In physics, when we describe the acceleration of a system, we model the system as a single point which contains all of the mass of that system. The center of mass is the point where the object will stay balanced even if only supported at this point.
For example, in a rigid object, the center of mass is the point about which the system's mass is evenly distributed. For a sphere or disk made of homogeneous material, this point is at the center. Similarly, for a rod made of homogeneous material, the center of mass will be at the midpoint.