ch07-distributed-forces-centroids-and-centers-of-gravity

y
x
dx
Problem 7.9 Solution
Use symmetry to help locate the
centroid. Symmetry implies
y = 0 z = 0
z
y = kx 1/3
r
x
Identify an element of volume dV
which produces a single or
double integral.
Choose as the element of volume a disk or radius r and
thickness dx. Then
dV = r 2 dx
x el = x
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