Q1 of 119 Page 156

Can the center of mass of a body be at a point outside the

body?


Yes, it is possible for the center of mass of a body to be at a


point outside the body. For example, consider a uniform ring.


Its center of mass lies at the center of the ring.


More from this chapter

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2

If all the particles of a system lie in X-Y plane, is it necessary that the center of mass be in X-Y plane?

 3

If all the particles of a system lie in a cube, is it necessary that the center of mass be in the cube?

 4

The center of mass is defined as Suppose we define “center of charge” as where qi represents the ith charge placed at and Q is the total charge of the system.

(a) Can the center of charge of a two-charge system be outside the line segment joining the charges?


(b) If all the charges of a system are in X.Y plane, is it necessary that the center of charge be in X-Y plane?


(c) If all the charges of a system lie in a cube, is it necessary that the center of charge be in the cube?


 5

The weight Mg of an extended body is generally shown in a diagram to act through the center of mass. Does it mean that the earth does not attract other particles?