READING QUIZ For a composite body, the center of gravity coincides with the centroid of the body if A) the composite body is made of simple geometric shapes. B)the composite body has no holes in it. C)the composite body has a constant density. D) the composite body is symmetrical.

READING QUIZ The composite body shown can be divided into _____ parts. A)One B)Two C)Three D)Four

CONCEPT QUIZ If an object is symmetrical about an axis, the centroid of the object lies somewhere on this axis. A)True B)False C)Sometimes

ATTENTION QUIZ 4.The y coordinate for the composite area’s centroid is A)1” B)1.75” C)2” D)3” y 1” yC 4” 1” 4” X

ATTENTION QUIZ Locate the center of gravity ( x, y, z ) of the homogenous wire. A)( –0.4, 0.9, 2.5 ) B)( –0.4, 0.9, 4.5 ) C)( 3, 5, –2 ) D)( –2, 3, 5 ) X 4” Z Y 10” 6”