Copyright © Michael Richmond.
This work is licensed under a Creative Commons License.
A ruler is exactly L inches long. It has a linear mass density which increases from one end of the ruler to the other:
    lambda(x)  =    a  +  b*x         
             where   "x"    is the distance from left end in inches
        Q:  What are the units of   a ?
        Q:  What are the units of   b ?
Q: What is the mass of the little piece shown? Q: What is the total mass of this ruler?
  Q:  What is the contribution of this little piece
          to the equation for center of mass?
  Q:  What is the location of the center
        of mass of the ruler in the horizontal direction?
 The answers 
Copyright © Michael Richmond.
This work is licensed under a Creative Commons License.