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6.2 CENTER OF MASS PRACTICE

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PRACTICE #1

Determine the a) x-center of mass and b) y-center of mass for the rocks shown in the picture above. (Remember: You can treat each object as a single point mass at the center of mass of each object.) Each unit in the scale is 3 cm.

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PRACTICE #2

Alexander Calder is making his latest mobile using four pieces of metal on a metal rod show below (assume the rod is straight, massless, and the units on the scale are decimeters). Where does the fourth piece of metal need to be placed so that the center of mass is at the location indicated in the diagram?

Metal 1

m = 40 g

Metal 2

m = 30 g

Metal 4

m = 10 g

Metal 3

m = 30 g

CM

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GOOD JOB!